Samples added.

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Assets/AboutAssets.txt

@@ -0,0 +1,19 @@
+Any raw assets you want to be deployed with your application can be placed in
+this directory (and child directories) and given a Build Action of "AndroidAsset".
+
+These files will be deployed with your package and will be accessible using Android's
+AssetManager, like this:
+
+public class ReadAsset : Activity
+{
+    protected override void OnCreate (Bundle bundle)
+    {
+        base.OnCreate (bundle);
+
+        InputStream input = Assets.Open ("my_asset.txt");
+    }
+}
+
+Additionally, some Android functions will automatically load asset files:
+
+Typeface tf = Typeface.CreateFromAsset (Context.Assets, "fonts/samplefont.ttf");

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/CSharpForMarkupDemos.Android.csproj

@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{D2553545-AAAA-407A-B4FC-5B045EFAE1E5}</ProjectGuid>
+    <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <TemplateGuid>{c9e5eea5-ca05-42a1-839b-61506e0a37df}</TemplateGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>CSharpForMarkupDemos.Droid</RootNamespace>
+    <AssemblyName>CSharpForMarkupDemos.Android</AssemblyName>
+    <AndroidApplication>True</AndroidApplication>
+    <AndroidResgenFile>Resources\Resource.designer.cs</AndroidResgenFile>
+    <AndroidResgenClass>Resource</AndroidResgenClass>
+    <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
+    <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
+    <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
+    <TargetFrameworkVersion>v9.0</TargetFrameworkVersion>
+    <AndroidEnableSGenConcurrent>true</AndroidEnableSGenConcurrent>
+    <AndroidUseAapt2>true</AndroidUseAapt2>
+    <AndroidHttpClientHandlerType>Xamarin.Android.Net.AndroidClientHandler</AndroidHttpClientHandlerType>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>portable</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidLinkMode>None</AndroidLinkMode>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>portable</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidManagedSymbols>true</AndroidManagedSymbols>
+    <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Mono.Android" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Numerics.Vectors" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1687" />
+    <PackageReference Include="Xamarin.Essentials" Version="1.3.1" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="MainActivity.cs" />
+    <Compile Include="Resources\Resource.designer.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\AboutResources.txt" />
+    <None Include="Assets\AboutAssets.txt" />
+    <None Include="Properties\AndroidManifest.xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\layout\Tabbar.xml" />
+    <AndroidResource Include="Resources\layout\Toolbar.xml" />
+    <AndroidResource Include="Resources\values\styles.xml" />
+    <AndroidResource Include="Resources\values\colors.xml" />
+    <AndroidResource Include="Resources\mipmap-anydpi-v26\icon.xml" />
+    <AndroidResource Include="Resources\mipmap-anydpi-v26\icon_round.xml" />
+    <AndroidResource Include="Resources\mipmap-hdpi\icon.png" />
+    <AndroidResource Include="Resources\mipmap-hdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-mdpi\icon.png" />
+    <AndroidResource Include="Resources\mipmap-mdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xhdpi\icon.png" />
+    <AndroidResource Include="Resources\mipmap-xhdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xxhdpi\icon.png" />
+    <AndroidResource Include="Resources\mipmap-xxhdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xxxhdpi\icon.png" />
+    <AndroidResource Include="Resources\mipmap-xxxhdpi\launcher_foreground.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Resources\drawable\" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\CSharpForMarkupDemos\CSharpForMarkupDemos.csproj">
+      <Project>{8770738D-2AD6-4B69-8502-ACC92F55B3F2}</Project>
+      <Name>CSharpForMarkupDemos</Name>
+    </ProjectReference>
+  </ItemGroup>
+ <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
+</Project>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/MainActivity.cs

@@ -0,0 +1,31 @@
+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+using Android.Runtime;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.Droid
+{
+    [Activity(Label = "CSharpForMarkupDemos", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
+    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
+    {
+        protected override void OnCreate(Bundle savedInstanceState)
+        {
+            TaskHelper.InitializeFromUIThread();
+            TabLayoutResource = Resource.Layout.Tabbar;
+            ToolbarResource = Resource.Layout.Toolbar;
+
+            base.OnCreate(savedInstanceState);
+
+            Xamarin.Essentials.Platform.Init(this, savedInstanceState);
+            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
+            LoadApplication(new App());
+        }
+        public override void OnRequestPermissionsResult(int requestCode, string[] permissions, [GeneratedEnum] Android.Content.PM.Permission[] grantResults)
+        {
+            Xamarin.Essentials.Platform.OnRequestPermissionsResult(requestCode, permissions, grantResults);
+
+            base.OnRequestPermissionsResult(requestCode, permissions, grantResults);
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Properties/AndroidManifest.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.companyname.csharpformarkupdemos">
+	<uses-sdk android:minSdkVersion="21" />
+	<application android:label="CSharpForMarkupDemos.Android"></application>
+	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Properties/AssemblyInfo.cs

@@ -0,0 +1,34 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Android.App;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CSharpForMarkupDemos.Android")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CSharpForMarkupDemos.Android")]
+[assembly: AssemblyCopyright("Copyright ©  2014")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+
+// Add some common permissions, these can be removed if not needed
+[assembly: UsesPermission(Android.Manifest.Permission.Internet)]
+[assembly: UsesPermission(Android.Manifest.Permission.WriteExternalStorage)]

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/AboutResources.txt

@@ -0,0 +1,50 @@
+Images, layout descriptions, binary blobs and string dictionaries can be included 
+in your application as resource files.  Various Android APIs are designed to 
+operate on the resource IDs instead of dealing with images, strings or binary blobs 
+directly.
+
+For example, a sample Android app that contains a user interface layout (main.xml),
+an internationalization string table (strings.xml) and some icons (drawable-XXX/icon.png) 
+would keep its resources in the "Resources" directory of the application:
+
+Resources/
+    drawable-hdpi/
+        icon.png
+
+    drawable-ldpi/
+        icon.png
+
+    drawable-mdpi/
+        icon.png
+
+    layout/
+        main.xml
+
+    values/
+        strings.xml
+
+In order to get the build system to recognize Android resources, set the build action to
+"AndroidResource".  The native Android APIs do not operate directly with filenames, but 
+instead operate on resource IDs.  When you compile an Android application that uses resources, 
+the build system will package the resources for distribution and generate a class called
+"Resource" that contains the tokens for each one of the resources included. For example, 
+for the above Resources layout, this is what the Resource class would expose:
+
+public class Resource {
+    public class drawable {
+        public const int icon = 0x123;
+    }
+
+    public class layout {
+        public const int main = 0x456;
+    }
+
+    public class strings {
+        public const int first_string = 0xabc;
+        public const int second_string = 0xbcd;
+    }
+}
+
+You would then use R.drawable.icon to reference the drawable/icon.png file, or Resource.layout.main 
+to reference the layout/main.xml file, or Resource.strings.first_string to reference the first 
+string in the dictionary file values/strings.xml.

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/layout/Tabbar.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.TabLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:id="@+id/sliding_tabs" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="?attr/colorPrimary" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" app:tabIndicatorColor="@android:color/white" app:tabGravity="fill" app:tabMode="fixed" />

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/layout/Toolbar.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="?attr/colorPrimary" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" android:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/mipmap-anydpi-v26/icon.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/launcher_background" />
+    <foreground android:drawable="@mipmap/launcher_foreground" />
+</adaptive-icon>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/mipmap-anydpi-v26/icon_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/launcher_background" />
+    <foreground android:drawable="@mipmap/launcher_foreground" />
+</adaptive-icon>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/values/colors.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="launcher_background">#FFFFFF</color>
+    <color name="colorPrimary">#3F51B5</color>
+    <color name="colorPrimaryDark">#303F9F</color>
+    <color name="colorAccent">#FF4081</color>
+</resources>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.Android/Resources/values/styles.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="MainTheme" parent="MainTheme.Base">
+    </style>
+    <!-- Base theme applied no matter what API -->
+    <style name="MainTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!--If you are using revision 22.1 please use just windowNoTitle. Without android:-->
+        <item name="windowNoTitle">true</item>
+        <!--We will be using the toolbar so no need to show ActionBar-->
+        <item name="windowActionBar">false</item>
+        <!-- Set theme colors from https://aka.ms/material-colors -->
+        <!-- colorPrimary is used for the default action bar background -->
+        <item name="colorPrimary">#2196F3</item>
+        <!-- colorPrimaryDark is used for the status bar -->
+        <item name="colorPrimaryDark">#1976D2</item>
+        <!-- colorAccent is used as the default value for colorControlActivated
+         which is used to tint widgets -->
+        <item name="colorAccent">#FF4081</item>
+        <!-- You can also set colorControlNormal, colorControlActivated
+         colorControlHighlight and colorSwitchThumbNormal. -->
+        <item name="windowActionModeOverlay">true</item>
+        <item name="android:datePickerDialogTheme">@style/AppCompatDialogStyle</item>
+    </style>
+    <style name="AppCompatDialogStyle" parent="Theme.AppCompat.Light.Dialog">
+        <item name="colorAccent">#FF4081</item>
+    </style>
+</resources>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/App.xaml

@@ -0,0 +1,7 @@
+<Application
+    x:Class="CSharpForMarkupDemos.UWP.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:CSharpForMarkupDemos.UWP">
+
+</Application>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/App.xaml.cs

@@ -0,0 +1,102 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Navigation;
+
+namespace CSharpForMarkupDemos.UWP
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    sealed partial class App : Application
+    {
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            this.InitializeComponent();
+            this.Suspending += OnSuspending;
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched normally by the end user.  Other entry points
+        /// will be used such as when the application is launched to open a specific file.
+        /// </summary>
+        /// <param name="e">Details about the launch request and process.</param>
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
+        {
+            Frame rootFrame = Window.Current.Content as Frame;
+
+            // Do not repeat app initialization when the Window already has content,
+            // just ensure that the window is active
+            if (rootFrame == null)
+            {
+                // Create a Frame to act as the navigation context and navigate to the first page
+                rootFrame = new Frame();
+
+                rootFrame.NavigationFailed += OnNavigationFailed;
+
+                Xamarin.Forms.Forms.Init(e);
+
+                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
+                {
+                    //TODO: Load state from previously suspended application
+                }
+
+                // Place the frame in the current Window
+                Window.Current.Content = rootFrame;
+            }
+
+            if (e.PrelaunchActivated == false)
+            {
+                if (rootFrame.Content == null)
+                {
+                    // When the navigation stack isn't restored navigate to the first page,
+                    // configuring the new page by passing required information as a navigation
+                    // parameter
+                    rootFrame.Navigate(typeof(MainPage), e.Arguments);
+                }
+                // Ensure the current window is active
+                Window.Current.Activate();
+            }
+        }
+
+        /// <summary>
+        /// Invoked when Navigation to a certain page fails
+        /// </summary>
+        /// <param name="sender">The Frame which failed navigation</param>
+        /// <param name="e">Details about the navigation failure</param>
+        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
+        {
+            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
+        }
+
+        /// <summary>
+        /// Invoked when application execution is being suspended.  Application state is saved
+        /// without knowing whether the application will be terminated or resumed with the contents
+        /// of memory still intact.
+        /// </summary>
+        /// <param name="sender">The source of the suspend request.</param>
+        /// <param name="e">Details about the suspend request.</param>
+        private void OnSuspending(object sender, SuspendingEventArgs e)
+        {
+            var deferral = e.SuspendingOperation.GetDeferral();
+            //TODO: Save application state and stop any background activity
+            deferral.Complete();
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/CSharpForMarkupDemos.UWP.csproj

@@ -0,0 +1,177 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProjectGuid>{BFACCCA8-2B79-4EF2-84F5-5ED44E9996B8}</ProjectGuid>
+    <OutputType>AppContainerExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>CSharpForMarkupDemos.UWP</RootNamespace>
+    <AssemblyName>CSharpForMarkupDemos.UWP</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
+    <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.18362.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.16299.0</TargetPlatformMinVersion>
+    <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
+    <AppxPackageSigningEnabled>false</AppxPackageSigningEnabled>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
+    <OutputPath>bin\ARM\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM64'">
+    <OutputPath>bin\ARM64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="MainPage.xaml.cs">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Properties\Default.rd.xml" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainPage.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
+      <Version>6.2.9</Version>
+    </PackageReference>
+    <PackageReference Include="Xamarin.Forms">
+      <Version>4.8.0.1687</Version>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\CSharpForMarkupDemos\CSharpForMarkupDemos.csproj">
+      <Project>{8770738d-2ad6-4b69-8502-acc92f55b3f2}</Project>
+      <Name>CSharpForMarkupDemos</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
+    <VisualStudioVersion>14.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it.
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/MainPage.xaml

@@ -0,0 +1,15 @@
+<forms:WindowsPage
+    x:Class="CSharpForMarkupDemos.UWP.MainPage"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:CSharpForMarkupDemos.UWP"
+    xmlns:forms="using:Xamarin.Forms.Platform.UWP"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d"
+    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
+
+    <Grid>
+
+    </Grid>
+</forms:WindowsPage>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/MainPage.xaml.cs

@@ -0,0 +1,14 @@
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.UWP
+{
+    public sealed partial class MainPage
+    {
+        public MainPage()
+        {
+            TaskHelper.InitializeFromUIThread();
+            this.InitializeComponent();
+            this.LoadApplication(new CSharpForMarkupDemos.App());
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/Package.appxmanifest

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  IgnorableNamespaces="uap mp">
+
+  <Identity
+    Name="dbcd8a25-d256-44f6-99ea-49e4814b8f3b"
+    Publisher="CN=Dave"
+    Version="1.0.0.0" />
+
+  <mp:PhoneIdentity PhoneProductId="dbcd8a25-d256-44f6-99ea-49e4814b8f3b" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>CSharpForMarkupDemos.UWP</DisplayName>
+    <PublisherDisplayName>Dave</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate"/>
+  </Resources>
+
+  <Applications>
+    <Application Id="App"
+      Executable="$targetnametoken$.exe"
+      EntryPoint="CSharpForMarkupDemos.UWP.App">
+      <uap:VisualElements
+        DisplayName="CSharpForMarkupDemos.UWP"
+        Square150x150Logo="Assets\Square150x150Logo.png"
+        Square44x44Logo="Assets\Square44x44Logo.png"
+        Description="CSharpForMarkupDemos.UWP"
+        BackgroundColor="transparent">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png"/>
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <Capability Name="internetClient" />
+  </Capabilities>
+</Package>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/Properties/AssemblyInfo.cs

@@ -0,0 +1,29 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CSharpForMarkupDemos.UWP")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CSharpForMarkupDemos.UWP")]
+[assembly: AssemblyCopyright("Copyright ©  2020")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: ComVisible(false)]

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.UWP/Properties/Default.rd.xml

@@ -0,0 +1,31 @@
+<!--
+    This file contains Runtime Directives used by .NET Native. The defaults here are suitable for most
+    developers. However, you can modify these parameters to modify the behavior of the .NET Native
+    optimizer.
+
+    Runtime Directives are documented at https://go.microsoft.com/fwlink/?LinkID=391919
+
+    To fully enable reflection for App1.MyClass and all of its public/private members
+    <Type Name="App1.MyClass" Dynamic="Required All"/>
+
+    To enable dynamic creation of the specific instantiation of AppClass<T> over System.Int32
+    <TypeInstantiation Name="App1.AppClass" Arguments="System.Int32" Activate="Required Public" />
+
+    Using the Namespace directive to apply reflection policy to all the types in a particular namespace
+    <Namespace Name="DataClasses.ViewModels" Serialize="All" />
+-->
+
+<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
+  <Application>
+    <!--
+      An Assembly element with Name="*Application*" applies to all assemblies in
+      the application package. The asterisks are not wildcards.
+    -->
+    <Assembly Name="*Application*" Dynamic="Required All" />
+    
+    
+    <!-- Add your application specific runtime directives here. -->
+
+
+  </Application>
+</Directives>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/AppDelegate.cs

@@ -0,0 +1,29 @@
+using CSharpForMarkupDemos.Helpers;
+using Foundation;
+using UIKit;
+
+namespace CSharpForMarkupDemos.iOS
+{
+    // The UIApplicationDelegate for the application. This class is responsible for launching the 
+    // User Interface of the application, as well as listening (and optionally responding) to 
+    // application events from iOS.
+    [Register("AppDelegate")]
+    public partial class AppDelegate : global::Xamarin.Forms.Platform.iOS.FormsApplicationDelegate
+    {
+        //
+        // This method is invoked when the application has loaded and is ready to run. In this 
+        // method you should instantiate the window, load the UI into it and then make the window
+        // visible.
+        //
+        // You have 17 seconds to return from this method, or iOS will terminate your application.
+        //
+        public override bool FinishedLaunching(UIApplication app, NSDictionary options)
+        {
+            TaskHelper.InitializeFromUIThread();
+            global::Xamarin.Forms.Forms.Init();
+            LoadApplication(new App());
+
+            return base.FinishedLaunching(app, options);
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,117 @@
+{
+  "images": [
+    {
+      "scale": "2x",
+      "size": "20x20",
+      "idiom": "iphone",
+      "filename": "Icon40.png"
+    },
+    {
+      "scale": "3x",
+      "size": "20x20",
+      "idiom": "iphone",
+      "filename": "Icon60.png"
+    },
+    {
+      "scale": "2x",
+      "size": "29x29",
+      "idiom": "iphone",
+      "filename": "Icon58.png"
+    },
+    {
+      "scale": "3x",
+      "size": "29x29",
+      "idiom": "iphone",
+      "filename": "Icon87.png"
+    },
+    {
+      "scale": "2x",
+      "size": "40x40",
+      "idiom": "iphone",
+      "filename": "Icon80.png"
+    },
+    {
+      "scale": "3x",
+      "size": "40x40",
+      "idiom": "iphone",
+      "filename": "Icon120.png"
+    },
+    {
+      "scale": "2x",
+      "size": "60x60",
+      "idiom": "iphone",
+      "filename": "Icon120.png"
+    },
+    {
+      "scale": "3x",
+      "size": "60x60",
+      "idiom": "iphone",
+      "filename": "Icon180.png"
+    },
+    {
+      "scale": "1x",
+      "size": "20x20",
+      "idiom": "ipad",
+      "filename": "Icon20.png"
+    },
+    {
+      "scale": "2x",
+      "size": "20x20",
+      "idiom": "ipad",
+      "filename": "Icon40.png"
+    },
+    {
+      "scale": "1x",
+      "size": "29x29",
+      "idiom": "ipad",
+      "filename": "Icon29.png"
+    },
+    {
+      "scale": "2x",
+      "size": "29x29",
+      "idiom": "ipad",
+      "filename": "Icon58.png"
+    },
+    {
+      "scale": "1x",
+      "size": "40x40",
+      "idiom": "ipad",
+      "filename": "Icon40.png"
+    },
+    {
+      "scale": "2x",
+      "size": "40x40",
+      "idiom": "ipad",
+      "filename": "Icon80.png"
+    },
+    {
+      "scale": "1x",
+      "size": "76x76",
+      "idiom": "ipad",
+      "filename": "Icon76.png"
+    },
+    {
+      "scale": "2x",
+      "size": "76x76",
+      "idiom": "ipad",
+      "filename": "Icon152.png"
+    },
+    {
+      "scale": "2x",
+      "size": "83.5x83.5",
+      "idiom": "ipad",
+      "filename": "Icon167.png"
+    },
+    {
+      "scale": "1x",
+      "size": "1024x1024",
+      "idiom": "ios-marketing",
+      "filename": "Icon1024.png"
+    }
+  ],
+  "properties": {},
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/CSharpForMarkupDemos.iOS.csproj

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">iPhoneSimulator</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>{42B19A08-8E98-4759-BBE7-BB19BDFCC2F5}</ProjectGuid>
+    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <TemplateGuid>{6143fdea-f3c2-4a09-aafa-6e230626515e}</TemplateGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>CSharpForMarkupDemos.iOS</RootNamespace>
+    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+    <AssemblyName>CSharpForMarkupDemos.iOS</AssemblyName>
+    <MtouchEnableSGenConc>true</MtouchEnableSGenConc>
+    <MtouchHttpClientHandler>NSUrlSessionHandler</MtouchHttpClientHandler>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhoneSimulator' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
+    <DefineConstants>DEBUG</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <MtouchArch>x86_64</MtouchArch>
+    <MtouchLink>None</MtouchLink>
+    <MtouchDebug>true</MtouchDebug>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhoneSimulator' ">
+    <DebugType>none</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <MtouchLink>None</MtouchLink>
+    <MtouchArch>x86_64</MtouchArch>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhone' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhone\Debug</OutputPath>
+    <DefineConstants>DEBUG</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <MtouchArch>ARM64</MtouchArch>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchDebug>true</MtouchDebug>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+    <MtouchLink>None</MtouchLink>
+    <MtouchInterpreter>-all</MtouchInterpreter>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
+    <DebugType>none</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhone\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <MtouchArch>ARM64</MtouchArch>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="Main.cs" />
+    <Compile Include="AppDelegate.cs" />
+    <None Include="Entitlements.plist" />
+    <None Include="Info.plist" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <InterfaceDefinition Include="Resources\LaunchScreen.storyboard" />
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon1024.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon180.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon167.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon152.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon120.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon87.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon80.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon76.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon60.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon58.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon40.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon29.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Icon20.png">
+      <Visible>false</Visible>
+    </ImageAsset>
+  </ItemGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.iOS" />
+    <Reference Include="System.Numerics" />
+    <Reference Include="System.Numerics.Vectors" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1687" />
+    <PackageReference Include="Xamarin.Essentials" Version="1.3.1" />
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
+  <ItemGroup>
+    <ProjectReference Include="..\CSharpForMarkupDemos\CSharpForMarkupDemos.csproj">
+      <Project>{8770738D-2AD6-4B69-8502-ACC92F55B3F2}</Project>
+      <Name>CSharpForMarkupDemos</Name>
+    </ProjectReference>
+  </ItemGroup>
+</Project>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Entitlements.plist

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+</dict>
+</plist>
+

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Info.plist

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>UIDeviceFamily</key>
+    <array>
+        <integer>1</integer>
+        <integer>2</integer>
+    </array>
+    <key>UISupportedInterfaceOrientations</key>
+    <array>
+        <string>UIInterfaceOrientationPortrait</string>
+        <string>UIInterfaceOrientationLandscapeLeft</string>
+        <string>UIInterfaceOrientationLandscapeRight</string>
+    </array>
+    <key>UISupportedInterfaceOrientations~ipad</key>
+    <array>
+        <string>UIInterfaceOrientationPortrait</string>
+        <string>UIInterfaceOrientationPortraitUpsideDown</string>
+        <string>UIInterfaceOrientationLandscapeLeft</string>
+        <string>UIInterfaceOrientationLandscapeRight</string>
+    </array>
+    <key>MinimumOSVersion</key>
+    <string>8.0</string>
+    <key>CFBundleDisplayName</key>
+    <string>CSharpForMarkupDemos</string>
+    <key>CFBundleIdentifier</key>
+    <string>com.companyname.CSharpForMarkupDemos</string>
+    <key>CFBundleVersion</key>
+    <string>1.0</string>
+    <key>UILaunchStoryboardName</key>
+    <string>LaunchScreen</string>
+    <key>CFBundleName</key>
+    <string>CSharpForMarkupDemos</string>
+    <key>XSAppIconAssets</key>
+    <string>Assets.xcassets/AppIcon.appiconset</string>
+</dict>
+</plist>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Main.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+using Foundation;
+using UIKit;
+
+namespace CSharpForMarkupDemos.iOS
+{
+    public class Application
+    {
+        // This is the main entry point of the application.
+        static void Main(string[] args)
+        {
+            // if you want to use a different Application Delegate class from "AppDelegate"
+            // you can specify it here.
+            UIApplication.Main(args, null, "AppDelegate");
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("CSharpForMarkupDemos.iOS")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("CSharpForMarkupDemos.iOS")]
+[assembly: AssemblyCopyright("Copyright ©  2014")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("72bdc44f-c588-44f3-b6df-9aace7daafdd")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.iOS/Resources/LaunchScreen.storyboard

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6245" systemVersion="13F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="X5k-f2-b5h">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6238" />
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="gAE-YM-kbH">
+            <objects>
+                <viewController id="X5k-f2-b5h" sceneMemberID="viewController">
+                    <layoutGuides>
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+                        <viewControllerLayoutGuide type="bottom" id="9ZL-r4-8FZ" />
+                    </layoutGuides>
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+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600" />
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES" />
+                        <subviews>
+                            <imageView userInteractionEnabled="NO" contentMode="scaleToFill" misplaced="YES" image="Icon-60.png" translatesAutoresizingMaskIntoConstraints="NO" id="23">
+                                <rect key="frame" x="270" y="270" width="60" height="60" />
+                                <rect key="contentStretch" x="0.0" y="0.0" width="0.0" height="0.0" />
+                            </imageView>
+                        </subviews>
+                        <color key="backgroundColor" red="0.20392156862745098" green="0.59607843137254901" blue="0.85882352941176465" alpha="1" colorSpace="calibratedRGB" />
+                        <constraints>
+                            <constraint firstItem="23" firstAttribute="centerY" secondItem="yd7-JS-zBw" secondAttribute="centerY" priority="1" id="39" />
+                            <constraint firstItem="23" firstAttribute="centerX" secondItem="yd7-JS-zBw" secondAttribute="centerX" priority="1" id="41" />
+                        </constraints>
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="XAI-xm-WK6" userLabel="First Responder" sceneMemberID="firstResponder" />
+            </objects>
+            <point key="canvasLocation" x="349" y="339" />
+        </scene>
+    </scenes>
+    <resources>
+        <image name="Icon-60.png" width="180" height="180" />
+    </resources>
+</document>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos.sln

@@ -0,0 +1,158 @@
+Microsoft Visual Studio Solution File, Format Version 12.00
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+EndProject
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+EndProject
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+EndProject
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+EndProject
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+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|ARM = Release|ARM
+		Release|ARM64 = Release|ARM64
+		Release|iPhone = Release|iPhone
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
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Docs/CSharpMarkupDemos/CSharpForMarkupDemos/App.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Threading.Tasks;
+using Xamarin.Essentials;
+using Xamarin.Forms;
+using CSharpForMarkupDemos.Views;
+using CSharpForMarkupDemos.ViewModels;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos
+{
+    public class App : Application
+    {
+        public static new App Current => (App)Application.Current;
+
+        RegistrationCodePage registrationCodePage;
+        NestedListPage nestedListPage;
+        AnimatedPage animatedPage;
+
+        public MainViewModel MainViewModel { get; private set; }
+        public RegistrationCodeViewModel RegistrationCodeViewModel { get; private set; }
+        public NestedListViewModel NestedListViewModel { get; private set; }
+
+        public App()
+        {
+            Device.SetFlags(new string[] { "Markup_Experimental" });
+
+            Resources = Styles.Implicit;
+            MainViewModel = new MainViewModel(this);
+            MainPage = new NavigationPage(new MainPage());
+        }
+
+        public Task ContinueToRegistration()
+        {
+            if (RegistrationCodeViewModel == null)
+                RegistrationCodeViewModel = new RegistrationCodeViewModel(this);
+            if (registrationCodePage == null)
+                registrationCodePage = new RegistrationCodePage();
+
+            return TaskHelper.RunOnUIThread(() => MainPage.Navigation.PushAsync(registrationCodePage, true));
+        }
+
+        public Task ContinueToNestedList()
+        {
+            if (NestedListViewModel == null)
+                NestedListViewModel = new NestedListViewModel(this);
+            if (nestedListPage == null)
+                nestedListPage = new NestedListPage();
+
+            return TaskHelper.RunOnUIThread(() => MainPage.Navigation.PushAsync(nestedListPage, true));
+        }
+
+        public Task ContinueToAnimatedPage()
+        {
+            if (animatedPage == null)
+                animatedPage = new AnimatedPage();
+
+            return TaskHelper.RunOnUIThread(() => MainPage.Navigation.PushAsync(animatedPage, true));
+        }
+
+        public Task OpenUri(string uri) => Launcher.OpenAsync(new Uri(uri));
+
+        public Task DisplayAlert(string title, string message, string cancel = "OK") => MainPage.DisplayAlert(title, message, cancel);
+
+        public Task ReturnToPreviousView() => MainPage.Navigation.PopAsync(true);
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/CSharpForMarkupDemos.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
+    <DebugType>portable</DebugType>
+    <DebugSymbols>true</DebugSymbols>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1687" />
+    <PackageReference Include="Xamarin.Essentials" Version="1.3.1" />
+    <PackageReference Include="PropertyChanged.Fody" Version="3.2.6" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Helpers\" />
+    <Folder Include="ViewModels\" />
+    <Folder Include="Views\" />
+    <Folder Include="Controls\" />
+  </ItemGroup>
+</Project>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Controls/PageHeader.cs

@@ -0,0 +1,90 @@
+using Xamarin.Forms;
+using Xamarin.Forms.Markup;
+using Xamarin.Forms.Markup.LeftToRight;
+using static Xamarin.Forms.Markup.GridRowsColumns;
+
+namespace CSharpForMarkupDemos.Controls
+{
+    public static class PageHeader
+    {
+        static double rowHeight = 25;
+
+        public static double ButtonDistanceFromTopOfPage => rowHeight * 2;
+
+        public static double ButtonHeight => rowHeight;
+
+        enum Row
+        {
+            StatusBar,
+            Title,
+            Subtitle
+        }
+
+        enum Col
+        {
+            First,
+            BackButton = First,
+            Title,
+            Last = Title
+        }
+
+        public static Grid Create(
+            double pageMarginSize,
+            string titlePropertyName = null,
+            string subTitlePropertyName = null,
+            string returnToPreviousViewCommandPropertyName = null,
+            string allowBackNavigationPropertyName = null,
+            bool centerTitle = false)
+        {
+            var grid = new Grid
+            {
+                BackgroundColor = Color.FromHex("#1976D2"),
+
+                ColumnSpacing = 0,
+                ColumnDefinitions = Columns.Define(
+                    (Col.BackButton, 60),
+                    (Col.Title, GridLength.Star)
+                ),
+
+                RowDefinitions = Rows.Define(
+                    (Row.StatusBar, Device.RuntimePlatform == Device.iOS ? rowHeight : 0),
+                    (Row.Title, rowHeight),
+                    (Row.Subtitle, rowHeight)
+                ),
+
+                Children = 
+                {
+                    new ContentView
+                    { 
+                        Content = (returnToPreviousViewCommandPropertyName != null) ?
+                            new Button { Text = "<", TextColor = Color.White, BackgroundColor = Color.FromHex("#1976D2") } .Font (24, bold: true)
+                                        .Left () .CenterVertical ()
+                                        .Bind (Button.CommandProperty, returnToPreviousViewCommandPropertyName)
+                            : null
+                    }  .Row (Row.Title, Row.Subtitle) .Column (Col.BackButton) .Padding (pageMarginSize, 0)
+                       .Invoke (b => { if (allowBackNavigationPropertyName != null) b.Bind (ContentView.IsVisibleProperty, allowBackNavigationPropertyName); }),
+
+                    new Label
+                    {
+                        LineBreakMode = LineBreakMode.TailTruncation,
+                        HorizontalOptions = centerTitle ? LayoutOptions.Center : LayoutOptions.Start,
+                        VerticalOptions = subTitlePropertyName != null ? LayoutOptions.End : LayoutOptions.Center,
+                        TextColor = Color.White
+                    }  .Bold ()
+                       .Row (Row.Title, subTitlePropertyName != null ? Row.Title : Row.Subtitle) .Column (centerTitle ? Col.First : Col.Title, centerTitle ? Col.Last : Col.Title)
+                       .Invoke (l => { if (titlePropertyName != null) l.Bind(titlePropertyName); })
+                }
+            };
+
+            if (subTitlePropertyName != null) grid.Children.Add(
+                new Label
+                {
+                    LineBreakMode = LineBreakMode.TailTruncation, TextColor = Color.White,
+                    HorizontalOptions = centerTitle ? LayoutOptions.Center : LayoutOptions.Start } .Bold ()
+                   .Row (Row.Subtitle) .Column (centerTitle ? Col.First : Col.Title, centerTitle ? Col.Last : Col.Title) .Top ()
+                   .Bind (subTitlePropertyName)
+            );
+            return grid;
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/FodyWeavers.xml

@@ -0,0 +1,3 @@
+<Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
+  <PropertyChanged />
+</Weavers>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/FodyWeavers.xsd

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <!-- This file was generated by Fody. Manual changes to this file will be lost when your project is rebuilt. -->
+  <xs:element name="Weavers">
+    <xs:complexType>
+      <xs:all>
+        <xs:element name="PropertyChanged" minOccurs="0" maxOccurs="1">
+          <xs:complexType>
+            <xs:attribute name="InjectOnPropertyNameChanged" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if the On_PropertyName_Changed feature is enabled.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="EventInvokerNames" type="xs:string">
+              <xs:annotation>
+                <xs:documentation>Used to change the name of the method that fires the notify event. This is a string that accepts multiple values in a comma separated form.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="CheckForEquality" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should be inserted. If false, equality checking will be disabled for the project.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="CheckForEqualityUsingBaseEquals" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should use the Equals method resolved from the base class.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+            <xs:attribute name="UseStaticEqualsFromBase" type="xs:boolean">
+              <xs:annotation>
+                <xs:documentation>Used to control if equality checks should use the static Equals method resolved from the base class.</xs:documentation>
+              </xs:annotation>
+            </xs:attribute>
+          </xs:complexType>
+        </xs:element>
+      </xs:all>
+      <xs:attribute name="VerifyAssembly" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'true' to run assembly verification (PEVerify) on the target assembly after all weavers have been executed.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="VerifyIgnoreCodes" type="xs:string">
+        <xs:annotation>
+          <xs:documentation>A comma-separated list of error codes that can be safely ignored in assembly verification.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="GenerateXsd" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'false' to turn off automatic generation of the XML Schema file.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Helpers/AnimationExtensions.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Xamarin.Forms;
+
+namespace CSharpForMarkupDemos.Helpers
+{
+    public static class AnimationExtensions
+    {
+        public static void StaggerIn(this IEnumerable<View> children, float translation, double delay)
+        {
+            int i = 0;
+            foreach (View view in children)
+            {
+                view.Opacity = 0;
+                view.TranslationY = translation;
+
+                Task.Delay(TimeSpan.FromSeconds(i++ * delay))
+                    .ContinueWith(_ =>
+                    {
+                        view.FadeTo(1);
+                        view.TranslateTo(0, 0, easing: Easing.CubicOut);
+                    });
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Helpers/RelayCommand.cs

@@ -0,0 +1,184 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using System.Windows.Input;
+
+namespace CSharpForMarkupDemos.Helpers
+{
+    public class RelayCommand : ICommand
+    {
+        readonly Action execute;
+        readonly Func<Task> asyncExecute;
+
+        Func<bool> canExecute;
+        int executingCount;
+
+        public RelayCommand(Action execute, Func<bool> canExecute = null)
+        {
+            if (execute == null)
+                throw new ArgumentNullException(nameof(execute));
+
+            this.execute = execute;
+            this.canExecute = canExecute;
+        }
+
+        // This ctor is protected here and public in a derived class, to allow simple initialization like new RelayCommand(MyMethod) without errors due to ambiguity  
+        protected RelayCommand(Func<Task> execute, Func<bool> canExecute = null)
+        {    
+            if (execute == null)
+                throw new ArgumentNullException(nameof(execute));
+
+            this.asyncExecute = execute;
+            this.canExecute = canExecute;
+        }
+
+        /// <summary>
+        /// If no canExecute deletage is provided, CanExecute allows a single simultaneous command execution
+        /// </summary>
+        /// <param name="parameter">Ignored; this is the paremeterless command class</param>
+        /// <returns></returns>
+        public bool CanExecute(object parameter = null)
+        {
+            try
+            {
+                return canExecute != null ? canExecute() : executingCount == 0;
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+                return true;
+            }
+        }
+
+        public event EventHandler CanExecuteChanged;
+
+        public void RaiseCanExecuteChanged()
+        {
+            CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+        }
+
+        // Asynchronous command handling based on http://stackoverflow.com/a/31595509/6043538
+        public async void Execute(object parameter = null)
+        {
+            bool couldExecuteBeforeExecute = CanExecute();
+            if (!couldExecuteBeforeExecute) return;
+
+            Interlocked.Increment(ref executingCount);
+            bool couldExecuteDuringExecute = CanExecute();
+            if (couldExecuteDuringExecute != couldExecuteBeforeExecute) RaiseCanExecuteChanged(); // TODO: test if always raising canexecutechanged does not disturb normal UI element update during a short synchronous command. If so, keep preventing multiple execution but only raise CanExecuteChanged for asynchrounous commands
+
+            try
+            {
+                if (execute != null) execute(); else await asyncExecute();
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+            }
+            finally
+            {
+                Interlocked.Decrement(ref executingCount);
+                bool couldExecuteAfterExecute = CanExecute();
+                if (couldExecuteAfterExecute != couldExecuteDuringExecute) RaiseCanExecuteChanged();
+            }
+        }
+    }
+
+    public class RelayCommandAsync : RelayCommand
+    {
+        // This ctor is public here and protected in the base class, to allow simple initialization like new RelayCommandAsync(MyMethod) without errors due to ambiguity  
+        public RelayCommandAsync(Func<Task> execute, Func<bool> canExecute = null) : base(execute, canExecute) { }
+    }
+
+    public class RelayCommand<TParameter> : ICommand
+    {
+        readonly Action<TParameter> execute;
+        readonly Func<TParameter, Task> asyncExecute;
+
+        Func<TParameter, bool> canExecute;
+        int executingCount;
+
+        public RelayCommand(Action<TParameter> execute, Func<TParameter, bool> canExecute = null)
+        {
+            if (execute == null)
+                throw new ArgumentNullException(nameof(execute));
+            this.execute = execute;
+            this.canExecute = canExecute;
+        }
+
+        // This ctor is protected here and public in a derived class, to allow simple initialization like new RelayCommand(MyMethod) without errors due to ambiguity
+        protected RelayCommand(Func<TParameter, Task> execute, Func<TParameter, bool> canExecute = null)            
+        {
+            if (execute == null)
+                throw new ArgumentNullException(nameof(execute));
+            asyncExecute = execute;
+            this.canExecute = canExecute;
+        }
+
+        /// <summary>
+        /// If no canExecute deletage is provided, CanExecute allows a single simultaneous command execution
+        /// </summary>
+        /// <param name="parameter"></param>
+        /// <returns></returns>
+        public bool CanExecute(object parameter = null)
+        {
+            try
+            {
+                return canExecute != null ? canExecute((TParameter)parameter) : executingCount == 0;
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+                return true;
+            }
+        }
+
+        public event EventHandler CanExecuteChanged;
+
+        public void RaiseCanExecuteChanged()
+        {
+            CanExecuteChanged?.Invoke(this, EventArgs.Empty);
+        }
+
+        // Asynchronous command handling based on http://stackoverflow.com/a/31595509/6043538
+        public async void Execute(object parameterAsObject)
+        {
+            bool couldExecuteBeforeExecute = CanExecute(parameterAsObject);
+            if (!couldExecuteBeforeExecute) return;
+
+            Interlocked.Increment(ref executingCount);
+            bool couldExecuteDuringExecute = CanExecute(parameterAsObject);
+            if (couldExecuteDuringExecute != couldExecuteBeforeExecute) RaiseCanExecuteChanged(); // TODO: test if always raising canexecutechanged does not disturb normal UI element update during a short synchronous command. If so, keep preventing multiple execution but only raise CanExecuteChanged for asynchrounous commands
+
+            try
+            {
+                var parameter = (TParameter)parameterAsObject;
+
+                if (execute != null)
+                {
+                    execute(parameter);
+                }
+                else
+                {
+                    await asyncExecute(parameter);
+                }
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+            }
+            finally
+            {
+                Interlocked.Decrement(ref executingCount);
+                bool couldExecuteAfterExecute = CanExecute(parameterAsObject);
+                if (couldExecuteAfterExecute != couldExecuteDuringExecute) RaiseCanExecuteChanged();
+            }
+        }
+    }
+
+    public class RelayCommandAsync<TParameter> : RelayCommand<TParameter>
+    {
+        // This ctor is public here and protected in the base class, to allow simple initialization like new RelayCommandAsync(MyMethod) without errors due to ambiguity
+        public RelayCommandAsync(Func<TParameter, Task> execute, Func<TParameter, bool> canExecute = null) : base(execute, canExecute) { }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Helpers/SingleSubscriptionEnsurer.cs

@@ -0,0 +1,38 @@
+using System;
+
+namespace CSharpForMarkupDemos.Helpers
+{
+    public class SingleSubscriptionEnsurer<T> where T : class
+    {
+        readonly Action<T> subscribe, unsubscribe;
+        T subscribedSender;
+
+        public SingleSubscriptionEnsurer(Action<T> subscribe, Action<T> unsubscribe)
+        {
+            this.subscribe = subscribe;
+            this.unsubscribe = unsubscribe;
+        }
+
+        public void EnsureSubscribed(T sender)
+        {
+            if (!object.ReferenceEquals(subscribedSender, sender))
+            {
+                EnsureUnsubscribed();
+                if (sender != null)
+                {
+                    subscribe.Invoke(sender);
+                    subscribedSender = sender;
+                }
+            }
+        }
+
+        public void EnsureUnsubscribed()
+        {
+            if (subscribedSender != null)
+            {
+                unsubscribe.Invoke(subscribedSender);
+                subscribedSender = null;
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Helpers/TaskHelper.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace CSharpForMarkupDemos.Helpers
+{
+#pragma warning disable CS1591 // Missing XML comment for publicly visible type or member
+
+	/// <summary>
+	/// Run synchronous and asychronous actions on the UI thread
+	/// Run synchronous and asychronous functions on the UI thread and return their result
+	/// Optimized: when already on the UI thread, executes directly without any scheduling.
+	/// Based on http://stackoverflow.com/questions/15428604/how-to-run-a-task-on-a-custom-taskscheduler-using-await
+	/// </summary>
+	public static class TaskHelper
+	{
+		static TaskScheduler uiTaskScheduler;
+		static TaskFactory uiTaskFactory;
+
+		/// <summary>
+		/// Call this method from the UI thread at application start, before you call RunOnUIThread
+		/// </summary>
+		public static void InitializeFromUIThread()
+		{
+			uiTaskScheduler = TaskScheduler.FromCurrentSynchronizationContext();
+			uiTaskFactory = new TaskFactory(CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskContinuationOptions.None, uiTaskScheduler);
+		}
+
+		public static Task RunOnUIThread(Func<Task> asyncAction) => uiTaskFactory.StartNew(asyncAction).Unwrap();
+
+		public static Task<T> RunOnUIThread<T>(Func<Task<T>> asyncFunction) => uiTaskFactory.StartNew(asyncFunction).Unwrap();
+
+		public static Task RunOnUIThread(Action action)
+		{
+			// If we are already on the UI thread, execute the action inline.
+			if (TaskScheduler.Current?.Id == uiTaskScheduler.Id) // We are already on the UI thread; excecute the action inline
+			{
+				action();
+				return Task.CompletedTask;
+			}
+
+			return uiTaskFactory.StartNew(action);
+		}
+
+		public static Task<T> RunOnUIThread<T>(Func<T> function)
+		{
+			// If we are already on the UI thread, execute the function inline.
+			if (TaskScheduler.Current?.Id == uiTaskScheduler.Id) // We are already on the UI thread; excecute the action inline
+			{
+				T result = function();
+				return Task.FromResult(result);
+			}
+
+			return uiTaskFactory.StartNew(function);
+		}
+	}
+
+#pragma warning restore CS1591 // Missing XML comment for publicly visible type or member
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Helpers/XLog.cs

@@ -0,0 +1,145 @@
+using System;
+using System.Diagnostics;
+using System.Runtime.CompilerServices;
+using System.Text;
+#if WINDOWS_UWP
+using Windows.Foundation.Diagnostics;
+#endif
+
+namespace CSharpForMarkupDemos.Helpers
+{
+    /// <summary>
+    /// Cross-platform logging helper class for use in Xamarin apps.
+    /// </summary>
+    public static class XLog
+    {
+        static string rootFolderPattern = null;
+#if WINDOWS_UWP
+        static LoggingChannel loggingChannel;
+#endif
+
+        /// <summary>
+        /// Call this before logging starts.
+        /// </summary>
+        /// <param name="rootFolderPattern">Should match the top folder name(s) within the source control repository, e.g. @"\MobileRealtimePush\MobileRealtimePush\". Any folders before the first match of this pattern are omitted from the logged source file paths</param>
+        public static void Init(string rootFolderPattern = null)
+        {
+            XLog.rootFolderPattern = rootFolderPattern;
+#if WINDOWS_UWP
+            loggingChannel = new LoggingChannel("XLog provider", null, new Guid("4bd2826e-54a1-4ba9-bf63-92b73ea1ac4a"));
+#endif
+        }
+
+
+        /// <summary>
+        /// If the DEBUG constant is defined in a build, DebugLog logs to the debug output and to the native logging 
+        /// mechanism of the mobile platform (NSLog on iOS or android.util.Log on Android).
+        /// 
+        /// String format: "[tag] memberName: data sourcefilePath:sourceLineNumber"
+        /// </summary>
+        /// <remarks>
+        /// In a release build both this method and any calls to it are compiled away.
+        /// </remarks>
+        /// <param name="data">object to log as ToString()</param>
+        /// <param name="tag">optional prefix</param>
+        /// <param name="memberName">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        /// <param name="sourceFilePath">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        /// <param name="sourceLineNumber">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        [Conditional("DEBUG")]
+        public static void Debug(
+            object data = null,
+            string tag = null,
+            [CallerMemberName] string memberName = null,
+            [CallerFilePath] string sourceFilePath = null,
+            [CallerLineNumber] int sourceLineNumber = -1)
+        {
+            string message = FormatLogString(data, tag, memberName, sourceFilePath, sourceLineNumber);
+            System.Diagnostics.Debug.WriteLine(message);
+#if WINDOWS_UWP
+            loggingChannel?.LogMessage(message, LoggingLevel.Verbose); // For ETW logging through UWP Device Portal. Read more at https://blogs.windows.com/buildingapps/2016/06/10/using-device-portal-to-view-debug-logs-for-uwp/#1CvyvpPD4lUTtPzc.99   
+#endif
+        }
+
+        /// <summary>
+        /// If the TRACE constant is defined in a build, TraceLog logs to the trace output and to the native logging 
+        /// mechanism of the mobile platform (NSLog on iOS or android.util.Log on Android).
+        /// 
+        /// String format: "[tag] memberName: data sourcefilePath:sourceLineNumber"
+        /// </summary>
+        /// <remarks>
+        /// If the TRACE constant is not defined in a build, both this method and any calls to it are compiled away.
+        /// </remarks>
+        /// <param name="data">object to log as ToString()</param>
+        /// <param name="tag">optional prefix</param>
+        /// <param name="memberName">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        /// <param name="sourceFilePath">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        /// <param name="sourceLineNumber">supplied by compiler, no need to specify in code unless you want to pass a deeper call context</param>
+        [Conditional("TRACE")]
+        public static void Trace(
+            object data = null,
+            string tag = null,
+            [CallerMemberName] string memberName = null,
+            [CallerFilePath] string sourceFilePath = null,
+            [CallerLineNumber] int sourceLineNumber = -1)
+        {
+            string message = FormatLogString(data, tag, memberName, sourceFilePath, sourceLineNumber);
+#if WINDOWS_UWP
+            System.Diagnostics.Debug.WriteLine(message);
+            loggingChannel?.LogMessage(message, LoggingLevel.Information); // For ETW logging through UWP Device Portal. Read more at https://blogs.windows.com/buildingapps/2016/06/10/using-device-portal-to-view-debug-logs-for-uwp/#1CvyvpPD4lUTtPzc.99   
+#else
+            System.Diagnostics.Trace.WriteLine(message);
+#endif
+        }
+
+        public static string TruncateAt(this string s, int maxLength, string truncatedSuffix = "...") => s?.Length <= maxLength ? s : s.Substring(0, maxLength) + truncatedSuffix;
+
+        static string FormatLogString(object data = null, string tag = null, string memberName = null, string sourceFilePath = null, int sourceLineNumber = -1)
+        {
+
+            StringBuilder line = new StringBuilder();
+
+            if (!string.IsNullOrEmpty(tag))
+            {
+                if (line.Length > 0) line.Append(' ');
+                line.Append('[');
+                line.Append(tag);
+                line.Append(']');
+            }
+
+            if (!string.IsNullOrEmpty(memberName))
+            {
+                if (line.Length > 0) line.Append(' ');
+                line.Append(memberName);
+                line.Append(':');
+            }
+
+            string dataString = data?.ToString();
+            if (!string.IsNullOrEmpty(dataString))
+            {
+                if (line.Length > 0) line.Append(' ');
+                line.Append(dataString);
+            }
+
+            if (!string.IsNullOrEmpty(sourceFilePath))
+            {
+                if (!string.IsNullOrEmpty(rootFolderPattern))
+                {
+                    int rootFolderIndex = sourceFilePath.IndexOf(rootFolderPattern);
+                    if (rootFolderIndex >= 0) sourceFilePath = sourceFilePath.Substring(rootFolderIndex);
+                }
+
+                if (line.Length > 0) line.Append(' ');
+                line.Append("at ");
+                line.Append(sourceFilePath);
+
+                if (sourceLineNumber >= 0)
+                {
+                    line.Append(":");
+                    line.Append(sourceLineNumber);
+                }
+            }
+
+            return line.ToString();
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Styles.cs

@@ -0,0 +1,45 @@
+using Xamarin.Forms.Markup;
+using Xamarin.Forms;
+
+namespace CSharpForMarkupDemos
+{
+    public static class Styles
+    {
+        static Style<Button> buttons, filledButton;
+        static Style<Label> labels;
+        static Style<Span> link;
+
+        #region Implicit styles
+
+        public static ResourceDictionary Implicit => new ResourceDictionary { Buttons, Labels };
+
+        public static Style<Button> Buttons => buttons ?? (buttons = new Style<Button>(
+            (Button.HeightRequestProperty, 44),
+            (Button.FontSizeProperty, 13),
+            (Button.HorizontalOptionsProperty, LayoutOptions.Center),
+            (Button.VerticalOptionsProperty, LayoutOptions.Center)
+        ));
+
+        public static Style<Label> Labels => labels ?? (labels = new Style<Label>(
+            (Label.FontSizeProperty, 13),
+            (Label.TextColorProperty, Color.Black)
+        ));
+
+        #endregion Implicit styles
+
+        #region Explicit styles
+
+        public static Style<Button> FilledButton => filledButton ?? (filledButton = new Style<Button>(
+            (Button.TextColorProperty, Color.White),
+            (Button.BackgroundColorProperty, Color.FromHex("#1976D2")),
+            (Button.CornerRadiusProperty, 5)
+        )).BasedOn(Buttons);
+
+        public static Style<Span> Link => link ?? (link = new Style<Span>(
+            (Span.TextColorProperty, Color.Blue),
+            (Span.TextDecorationsProperty, TextDecorations.Underline)
+        ));
+
+        #endregion Explicit styles
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/ViewModels/BaseViewModel.cs

@@ -0,0 +1,72 @@
+using System.ComponentModel;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.ViewModels
+{
+    public abstract class BaseViewModel : INotifyPropertyChanged
+    {
+        /// <summary>
+        /// Check this property when you receive events from outside the viewmodel, e.g. from services.
+        /// If IsShowing is true then it is a good time to update data-bound properties;
+        /// if IsShowing is false then you could set a dirty flag, so later in OnShow() you can retrieve 
+        /// changed data and update any changed data-bound properties.
+        /// </summary>
+        public bool IsShowing { get; private set; }
+        
+        /// <summary>
+        /// This method is called when a view becomes visible. 
+        /// You can override this method to update
+        /// data-bound properties for any changes that originated from outside the viewmodel, 
+        /// e.g. changes in service model objects that you were notified about in service events that you
+        /// subscribed to in the viewmodel.
+        /// 
+        /// Always call base.OnShow() at the start of your method when you override it!
+        /// 
+        /// The view base classes call this method on the following view lifecycle events: 
+        /// iOS:     TODO
+        /// Android: TODO
+        /// Windows: OnNavigatedTo
+        /// </summary>
+        public virtual void OnShow()
+        {
+            IsShowing = true;
+        }
+
+        /// <summary>
+        /// This method is called when a view becomes invisible. 
+        /// You can override this method to handle any tasks that do not belong in OnUserInteractionStopped().
+        /// 
+        /// Always call base.OnHide() at the end of your method when you override it!
+        /// 
+        /// The view base classes call this method on the following view lifecycle events: 
+        /// iOS:     TODO
+        /// Android: TODO
+        /// Windows: OnNavigatingFrom
+        /// </summary>
+        public virtual void OnHide()
+        {
+            IsShowing = false;
+            OnUserInteractionStopped();
+        }
+
+        /// <summary>
+        /// This method is called when the user is done interacting with the viewmodel.
+        /// <example>E.g. override this method to save changes in the viewmodel without the need for a save button.</example>
+        /// <remarks>The standard QuickCross implementation will call this method from lifecycle events,
+        /// such as when the app is stopped or when navigating away from a view.
+        /// You could also call this method on other moments, e.g. when the user is inactive for a number of seconds.</remarks>
+        /// </summary>
+        public virtual void OnUserInteractionStopped() { }
+
+        #region INotifyPropertyChanged
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void RaisePropertyChanged(string propertyName)
+        {
+            var handler = PropertyChanged;
+            if (handler != null)
+                TaskHelper.RunOnUIThread(() => handler(this, new PropertyChangedEventArgs(propertyName)));
+        }
+        #endregion
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/ViewModels/MainViewModel.cs

@@ -0,0 +1,34 @@
+using System.Threading.Tasks;
+using System.Windows.Input;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.ViewModels
+{
+    public class MainViewModel : BaseViewModel
+    {
+        readonly App app;
+
+        ICommand continueToRegistrationCommand;
+        ICommand continueToNestedListCommand;
+        ICommand continueToCSharpForMarkupCommand;
+        ICommand continueToAnimatedPageCommand;
+
+        public string Title => "Xamarin.Forms C# Markup";
+        public string SubTitle => "Demos";
+
+        public ICommand ContinueToRegistrationCommand => continueToRegistrationCommand ?? (continueToRegistrationCommand = new RelayCommandAsync(ContinueToRegistration));
+        public ICommand ContinueToNestedListCommand => continueToNestedListCommand ?? (continueToNestedListCommand = new RelayCommandAsync(ContinueToNestedList));
+        public ICommand ContinueToAnimatedPageCommand => continueToAnimatedPageCommand ?? (continueToAnimatedPageCommand = new RelayCommandAsync(ContinueToAnimatedPage));
+        public ICommand ContinueToCSharpForMarkupCommand => continueToCSharpForMarkupCommand ?? (continueToCSharpForMarkupCommand = new RelayCommandAsync(ContinueToCSharpForMarkup));
+        
+        public MainViewModel(App app)
+        {
+            this.app = app;
+        }
+
+        Task ContinueToRegistration() => app.ContinueToRegistration();
+        Task ContinueToNestedList() => app.ContinueToNestedList();
+        Task ContinueToAnimatedPage() => app.ContinueToAnimatedPage();
+        Task ContinueToCSharpForMarkup() => app.OpenUri("https://docs.microsoft.com/xamarin/xamarin-forms/user-interface/csharp-markup");
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/ViewModels/NestedListViewModel.cs

@@ -0,0 +1,110 @@
+using System.Threading.Tasks;
+using System.Windows.Input;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.ViewModels
+{
+    public class NestedListViewModel : BaseViewModel
+    {
+        readonly App app;
+        ICommand addGroupCommand;
+        ICommand removeGroupCommand;
+        ICommand removeItemCommand;
+        ICommand returnToPreviousViewCommand;
+
+        public string Title { get; set; } = "Xamarin.Forms C# Markup";
+        public string Subtitle { get; set; } = "Nested List";
+
+        public ObservableCollection<ListGroup> Groups { get; set; } = new ObservableCollection<ListGroup>();
+        public ICommand AddGroupCommand => addGroupCommand ?? (addGroupCommand = new RelayCommand(AddGroup));
+        public ICommand RemoveGroupCommand => removeGroupCommand ?? (removeGroupCommand = new RelayCommand<ListGroup>(RemoveGroup));
+        public ICommand RemoveItemCommand => removeItemCommand ?? (removeItemCommand = new RelayCommand<ListItem>(RemoveItem));
+        public ICommand ReturnToPreviousViewCommand => returnToPreviousViewCommand ?? (returnToPreviousViewCommand = new RelayCommandAsync(ReturnToPreviousView));
+
+        public NestedListViewModel(App app)
+        {
+            this.app = app;
+            AddGroup();
+        }
+
+        void AddGroup() => Groups.Add(new ListGroup { Title = $"Group { Groups.Count + 1 }" });
+
+        void RemoveGroup(ListGroup group) => Groups.Remove(group);
+
+        void RemoveItem(ListItem item)
+        {
+            if (item.IsDummy) return;
+
+            var group = Groups.FirstOrDefault(g => g.Contains(item));
+            if (group == null) return;
+
+            group.Remove(item); group.Update();
+        }
+
+        Task ReturnToPreviousView() => app.ReturnToPreviousView();
+    }
+
+    public class ListGroup : ObservableCollection<ListItem>
+    {
+        ICommand addItemCommand;
+
+        public ListGroup() { Items.Add(new ListItem { IsDummy = true }); }
+
+        public ListGroup(IEnumerable<ListItem> items) : base(items) { }
+
+        public string Title { get; set; }
+
+        public bool IsOdd { get; set; }
+
+        public new ObservableCollection<ListItem> Items => this;
+
+        public ICommand AddItemCommand => addItemCommand ?? (addItemCommand = new RelayCommand(AddItem));
+
+        public void Update() => IsOdd = (Items.Count - 1) % 2 == 1;
+
+        void AddItem() { Items.Add(new ListItem { Title = Items.Count.ToString() }); Update(); }
+    }
+
+    public class ListItem : BaseViewModel
+    {
+        ICommand increaseCountCommand, decreaseCountCommand;
+
+        public bool IsDummy { get; set; }
+
+        public string Title { get; set; }
+
+        public int Count { get; set; }
+
+        public string CountText => Pile('\u2b50', Count);
+
+        public ICommand IncreaseCountCommand => increaseCountCommand ?? (increaseCountCommand = new RelayCommand(IncreaseCount, () => Count < 15));
+
+        public ICommand DecreaseCountCommand => decreaseCountCommand ?? (decreaseCountCommand = new RelayCommand(DecreaseCount, () => Count > 0));
+
+        void IncreaseCount() => Count++;
+
+        void DecreaseCount() => Count--;
+
+        string Pile(char c, int count)
+        {
+            List<string> lines = new List<string>();
+
+            for (int lineLength = 1; count >= lineLength; lineLength++)
+            {
+                lines.Add(new string(c, lineLength));
+                count -= lineLength;
+            }
+
+            while (count > 0)
+            {
+                lines[lines.Count - count] = lines[lines.Count - count] + c;
+                count--;
+            }
+
+            return string.Join("\n", lines.ToArray());
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/ViewModels/RegistrationCodeViewModel.cs

@@ -0,0 +1,57 @@
+using System.Threading.Tasks;
+using System.Windows.Input;
+using System.Text.RegularExpressions;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.ViewModels
+{
+    public class RegistrationCodeViewModel : BaseViewModel
+    {
+        readonly App app;
+        string registrationCode;
+        ICommand verifyRegistrationCodeCommand;
+        ICommand returnToPreviousViewCommand;
+
+        public string RegistrationTitle => "Xamarin.Forms C# Markup";
+        public string RegistrationSubTitle => "Registration code demo";
+        public string RegistrationPrompt { get; set; } = "Your test registration code is 123456.\n\nPlease enter it below";
+
+        public string RegistrationCode
+        {
+            get { return registrationCode; }
+            set
+            {
+                registrationCode = value;
+                if (Regex.IsMatch(registrationCode, @"^\d{6}$"))
+                {
+                    IsRegistrationCodeFormatValid = true;
+                    RegistrationCodeValidationMessage = null;
+                }
+                else
+                {
+                    IsRegistrationCodeFormatValid = false;
+                    RegistrationCodeValidationMessage = "6 digits";
+                }
+            }
+        }
+
+        public bool IsRegistrationCodeFormatValid { get; set; }
+
+        public bool CanVerifyRegistrationCode => IsRegistrationCodeFormatValid;
+
+        public string RegistrationCodeValidationMessage { get; set; }
+
+        public ICommand VerifyRegistrationCodeCommand { get { return verifyRegistrationCodeCommand ?? (verifyRegistrationCodeCommand = new RelayCommandAsync(SaveRegistrationCode)); } }
+
+        public ICommand ReturnToPreviousViewCommand => returnToPreviousViewCommand ?? (returnToPreviousViewCommand = new RelayCommandAsync(ReturnToPreviousView));
+
+        public RegistrationCodeViewModel(App app)
+        {
+            this.app = app;
+        }
+
+        Task SaveRegistrationCode() => app.DisplayAlert("Registration", $"Registered code { RegistrationCode }");
+
+        Task ReturnToPreviousView() => app.ReturnToPreviousView();
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/AnimatedPage.cs

@@ -0,0 +1,38 @@
+using Xamarin.Forms;
+using Xamarin.Forms.Markup;
+
+namespace CSharpForMarkupDemos.Views
+{
+    partial class AnimatedPage : BaseContentPage
+    {
+        void Build()
+        {
+            Title = "Animated page demo";
+
+            Content = new StackLayout
+            {
+                IsVisible = false,
+                Children =
+                {
+                    new StyledLabel ("Animation example"),
+                    new StyledLabel ("to illustrate"),
+                    new StyledLabel ("separation"),
+                    new StyledLabel ("of"),
+                    new StyledLabel ("UI Markup") { TextColor = Color.Green } .Bold (),
+                    new StyledLabel ("and"),
+                    new StyledLabel ("UI Logic") { TextColor = Color.Red } .Bold ()
+                }
+            } .Assign (out animatedStackLayout);
+        }
+
+        class StyledLabel : Label
+        {
+            public StyledLabel(string text)
+            {
+                Text = text;
+                this .FontSize (32)
+                     .CenterHorizontal ();
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/AnimatedPage.logic.cs

@@ -0,0 +1,19 @@
+using Xamarin.Forms;
+using CSharpForMarkupDemos.Helpers;
+
+namespace CSharpForMarkupDemos.Views
+{
+    partial class AnimatedPage
+    {
+        StackLayout animatedStackLayout;
+
+        public AnimatedPage() => Build();
+
+        protected override void OnAppearing()
+        {
+            base.OnAppearing();
+            Content.IsVisible = true;
+            animatedStackLayout.Children.StaggerIn(50, 0.5);
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/BaseContentPage.cs

@@ -0,0 +1,50 @@
+using System;
+using CSharpForMarkupDemos.Helpers;
+using CSharpForMarkupDemos.ViewModels;
+using Xamarin.Forms;
+
+namespace CSharpForMarkupDemos.Views
+{
+    public class BaseContentPage : ContentPage
+    {
+        protected static double PageMarginSize = 12;
+        protected static double HeaderHeight = 26;
+        protected static double CellHorizontalMarginSize = 16;
+        protected static double CellVerticalMarginSize = 12;
+    }
+
+    public class BaseContentPage<ViewModelType> : BaseContentPage where ViewModelType : BaseViewModel
+    {
+        protected ViewModelType ViewModel
+        {
+            get { return (ViewModelType)BindingContext; }
+            set { BindingContext = value; }
+        }
+
+        protected override void OnAppearing()
+        {
+            try
+            {
+                base.OnAppearing();
+                ViewModel?.OnShow();
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+            }
+        }
+
+        protected override void OnDisappearing()
+        {
+            try
+            {
+                ViewModel?.OnHide();
+                base.OnDisappearing();
+            }
+            catch (Exception ex)
+            {
+                XLog.Trace(ex);
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/MainPage.cs

@@ -0,0 +1,72 @@
+using CSharpForMarkupDemos.Controls;
+using CSharpForMarkupDemos.ViewModels;
+using Xamarin.Forms;
+using Xamarin.Forms.Markup;
+using static CSharpForMarkupDemos.Styles;
+using static Xamarin.Forms.Markup.GridRowsColumns;
+
+namespace CSharpForMarkupDemos.Views
+{
+    class MainPage : BaseContentPage<MainViewModel>
+    {
+        public MainPage() => Build();
+
+        enum PageRow
+        {
+            Header,
+            Body
+        }
+
+        void Build()
+        {
+            var app = App.Current;
+            var vm = ViewModel = app.MainViewModel;
+
+            NavigationPage.SetHasNavigationBar(this, false);
+            BackgroundColor = Color.AliceBlue;
+
+            Content = new Grid
+            {
+                RowSpacing = 0,
+                RowDefinitions = Rows.Define((PageRow.Header, Auto), (PageRow.Body, Star)),
+
+                Children =
+                {
+                    PageHeader.Create (PageMarginSize, nameof(vm.Title), nameof(vm.SubTitle))
+                                      .Row (PageRow.Header),
+
+                    new ScrollView 
+                    { 
+                        Content = new StackLayout 
+                        {
+                            Children = 
+                            {
+                                new NavigateButton ("Registration code demo", nameof(vm.ContinueToRegistrationCommand)),
+                                new NavigateButton ("Nested list demo", nameof(vm.ContinueToNestedListCommand)),
+                                new NavigateButton ("Animated page demo", nameof(vm.ContinueToAnimatedPageCommand)),
+                                new Label { }
+                                           .FormattedText (
+                                                new Span { Text = "For more information about C# Markup, see " },
+                                                new Span { Text = "C# Markup", Style = Link }
+                                                          .BindTapGesture (nameof(vm.ContinueToCSharpForMarkupCommand)),
+                                                new Span { Text = "." })
+                                           .CenterHorizontal ()
+                            }
+                        } .Margin (10)
+                    } .Row (PageRow.Body)
+                }
+            };
+        }
+
+        class NavigateButton : Button
+        {
+            public NavigateButton(string text, string command)
+            {
+                Text = text;
+                this .Style (FilledButton)
+                     .FillExpandHorizontal () .Margin (PageMarginSize)
+                     .Bind (command);
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/NestedListPage.cs

@@ -0,0 +1,211 @@
+using Xamarin.Forms;
+using Xamarin.Forms.Markup;
+using Xamarin.Forms.Markup.LeftToRight;
+using static Xamarin.Forms.Markup.GridRowsColumns;
+using CSharpForMarkupDemos.ViewModels;
+using CSharpForMarkupDemos.Controls;
+
+namespace CSharpForMarkupDemos.Views
+{
+    public partial class NestedListPage : BaseContentPage<NestedListViewModel>
+    {
+        enum PageRow
+        {
+            Header,
+            Body
+        }
+
+        enum GroupRow
+        {
+            Body,
+            Separator
+        }
+
+        void Build()
+        {
+            var app = App.Current;
+            var vm = ViewModel = app.NestedListViewModel;
+
+            NavigationPage.SetHasNavigationBar(this, false);
+            BackgroundColor = Color.AliceBlue;
+
+            Content = new Grid 
+            {
+                RowSpacing = 0,
+                RowDefinitions = Rows.Define(
+                    (PageRow.Header, Auto),
+                    (PageRow.Body, Star)
+                ),
+
+                Children = 
+                {
+                    PageHeader.Create(PageMarginSize, nameof(vm.Title), nameof(vm.Subtitle), nameof(vm.ReturnToPreviousViewCommand))
+                        .Row (PageRow.Header),
+
+                    new ListView(ListViewCachingStrategy.RecycleElement) 
+                    {
+                        IsGroupingEnabled = true,
+                        HasUnevenRows = true,
+
+                        BackgroundColor = Color.White,
+                        SeparatorColor = Color.White,
+
+                        GroupHeaderTemplate = new DataTemplate(() => new ViewCell 
+                        { 
+                            Height = 40, 
+                            View = new Grid 
+                            {
+                                BackgroundColor = Color.White,
+                                RowSpacing = 0,
+                                RowDefinitions = Rows.Define((GroupRow.Body, Star), (GroupRow.Separator, 2)),
+
+                                Children = 
+                                {
+                                    new StackLayout 
+                                    {
+                                        Orientation = StackOrientation.Horizontal, 
+                                        Spacing = 5, 
+                                        Children = 
+                                        {
+                                            new Label { TextColor = Color.Black } .Font (15) .Bold ()
+                                                       .Margins (left: PageMarginSize) .LeftExpand () .CenterVertical ()
+                                                       .Bind (nameof(ListGroup.Title)),
+
+                                            new Frame { CornerRadius = 4, HasShadow = false, BackgroundColor = Color.FromHex("#1976D2"), 
+                                                        Content = new Label { Text = "Odd", TextColor = Color.White } }
+                                                       .CenterVertical () .Margins (right: 10) .Padding (9, 3)
+                                                       .Bind (Frame.IsVisibleProperty, nameof(ListGroup.IsOdd)),
+
+                                            new Button { Text = " Add Item " }
+                                                        .CenterVertical ()
+                                                        .Bind (nameof(ListGroup.AddItemCommand)),
+
+                                            new Button { Text = " Remove Group " }
+                                                        .CenterVertical () .Margins (right: PageMarginSize)
+                                                        .BindCommand (nameof(vm.RemoveGroupCommand), source: vm)
+                                        }
+                                    }  .Row (GroupRow.Body),
+
+                                    new BoxView { Color = Color.SlateGray }
+                                                 .Row (GroupRow.Separator)
+                                }
+                            }
+                        }),
+
+                        ItemTemplate = new ListItemSelector(vm),
+
+                        Footer = new Button { Text = " Add Group " }
+                                             .Bind (nameof(vm.AddGroupCommand)),
+                    }.Row (PageRow.Body)
+                     .Invoke (l => l.ItemSelected += List_ItemSelected)
+                     .Bind (nameof(vm.Groups))
+                }
+            };
+        }
+
+        partial class ListItemSelector : DataTemplateSelector
+        {
+            enum Row
+            {
+                Header,
+                Separator,
+                Piles,
+                Buttons,
+                Last = Buttons
+            }
+
+            enum Col
+            {
+                LeftPileIcon,
+                LeftPile,
+                PileSeparator,
+                RightPileIcon,
+                RightPile,
+                Nr,
+                Last = Nr
+            }
+
+            public ListItemSelector(NestedListViewModel vm)
+            {
+                template = new DataTemplate(() => new ViewCell 
+                {
+                    View = new StackLayout 
+                    { 
+                        Spacing = 0, 
+                        Children = 
+                        {
+                            new Grid
+                            {
+                                Margin = new Thickness(PageMarginSize, 6, PageMarginSize, 0),
+                                BackgroundColor = Color.White,
+
+                                RowDefinitions = Rows.Define(
+                                    (Row.Header   , Auto),
+                                    (Row.Separator, 10),
+                                    (Row.Piles    , Auto),
+                                    (Row.Buttons  , Auto)
+                                ),
+
+                                ColumnDefinitions = Columns.Define(
+                                    (Col.LeftPileIcon , 24),
+                                    (Col.LeftPile     , Star),
+                                    (Col.PileSeparator, 11),
+                                    (Col.RightPileIcon, 24),
+                                    (Col.RightPile    , Star),
+                                    (Col.Nr           , 55)
+                                ),
+
+                                Children = 
+                                {
+                                    new Label { Text = "\u2b50 ", TextColor = Color.Green }
+                                               .Row (Row.Header) .Column (Col.LeftPileIcon) .Left () .CenterVertical (),
+
+                                    new Label { Text = "Item", LineBreakMode = LineBreakMode.TailTruncation } .Font (15) .Bold ()
+                                               .Row (Row.Header) .Column (Col.LeftPile, Col.Last) .CenterVertical (),
+
+                                    new Label { TextColor = Color.Black } .Bold ()
+                                               .Row (Row.Header) .Column (Col.Nr) .Center ()
+                                               .Bind (nameof(ListItem.Title)),
+
+                                    new Label { Text = "\U0001f60e " }
+                                               .Row (Row.Piles) .Column (Col.LeftPileIcon) .Left () .CenterVertical (),
+
+                                    new Label { } .Font (14) .Bold ()
+                                               .Row (Row.Piles) .Column (Col.LeftPile) .CenterVertical () .TextCenterHorizontal () .TextBottom ()
+                                               .Bind (nameof(ListItem.CountText)),
+
+                                    new BoxView { Color = Color.DarkBlue }
+                                                 .Row (Row.Piles, Row.Buttons) .Column (Col.PileSeparator) .CenterHorizontal () .Bottom () .Size (2, 30) .Margins (bottom: 3),
+
+                                    new Label { Text = "\U0001f60e " }
+                                               .Row (Row.Piles) .Column (Col.RightPileIcon) .Left () .CenterVertical (),
+
+                                    new Label { } .Font (14) .Bold ()
+                                               .Row (Row.Piles) .Column (Col.RightPile) .CenterVertical () .TextCenterHorizontal () .TextBottom ()
+                                               .Bind (nameof(ListItem.CountText)),                                    
+
+                                    new Button { Text = "-", TextColor = Color.White, BackgroundColor = Color.FromHex("#1976D2")} .Font (14)
+                                                .Row (Row.Buttons) .Column (Col.LeftPileIcon, Col.LeftPile) .FillHorizontal () .CenterVertical ()
+                                                .Invoke (b => b.Clicked += DecreaseCount),
+
+                                    new Button { Text = "+", TextColor = Color.White, BackgroundColor = Color.FromHex("#1976D2") } .Font (14)
+                                                .Row (Row.Buttons) .Column (Col.RightPileIcon, Col.RightPile) .FillHorizontal () .CenterVertical ()
+                                                .Invoke (b => b.Clicked += IncreaseCount),
+                                }
+                            }  .Padding (CellHorizontalMarginSize, CellVerticalMarginSize),
+
+                            new BoxView { }
+                                         .FillExpandHorizontal () .Height (3) .Margins (PageMarginSize, 0, PageMarginSize, 6)
+                                         .Bind (nameof(ListItem.Count), convert: (int count) => count % 2 == 1 ? Color.Green : Color.Red),
+
+                            new Button { Text = " Remove item " }
+                                        .BindCommand (nameof(vm.RemoveItemCommand), source: vm)
+                        }
+                    }
+                });
+
+                emptyTemplate = new DataTemplate(() => new ViewCell { Height = 0.1, View = new ContentView { HeightRequest = 0.1, IsVisible = false } });
+            }
+        }
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/NestedListPage.logic.cs

@@ -0,0 +1,47 @@
+using System;
+using Xamarin.Forms;
+using CSharpForMarkupDemos.ViewModels;
+
+namespace CSharpForMarkupDemos.Views
+{
+    public partial class NestedListPage : BaseContentPage<NestedListViewModel>
+    {
+        public NestedListPage() => Build();
+
+        void List_ItemSelected(object sender, SelectedItemChangedEventArgs e) => ((ListView)sender).SelectedItem = null; // Prevent item selection
+
+        partial class ListItemSelector : DataTemplateSelector
+        {
+            readonly DataTemplate template, emptyTemplate;
+
+            protected override DataTemplate OnSelectTemplate(object item, BindableObject container) => item is ListItem listItem && !listItem.IsDummy ? template : emptyTemplate;
+
+            void DecreaseCount(object sender, EventArgs args)
+            {
+                var button = (Button)sender;
+                var listItem = (ListItem)button.BindingContext;
+
+                listItem.DecreaseCountCommand.Execute(null);
+                ForceUpdateContainingCellSize(button);
+            }
+
+            void IncreaseCount(object sender, EventArgs args)
+            {
+                var button = (Button)sender;
+                var listItem = (ListItem)button.BindingContext;
+
+                listItem.IncreaseCountCommand.Execute(null);
+                ForceUpdateContainingCellSize(button);
+            }
+
+            void ForceUpdateContainingCellSize(Element element)
+            {
+                for (var parent = element?.Parent; parent != null; parent = parent.Parent)
+                {
+                    if (parent is ViewCell viewCell) { viewCell.ForceUpdateSize(); break; }
+                }
+            }
+        }
+
+    }
+}

Docs/CSharpMarkupDemos/CSharpForMarkupDemos/Views/RegistrationCodePage.cs

@@ -0,0 +1,104 @@
+using CSharpForMarkupDemos.Controls;
+using CSharpForMarkupDemos.ViewModels;
+using Xamarin.Forms;
+using Xamarin.Forms.Markup;
+using Xamarin.Forms.Markup.LeftToRight;
+using static CSharpForMarkupDemos.Styles;
+using static Xamarin.Forms.Markup.GridRowsColumns;
+
+namespace CSharpForMarkupDemos.Views
+{
+    public class RegistrationCodePage : BaseContentPage<RegistrationCodeViewModel>
+    {
+        public RegistrationCodePage() => Build();
+
+        enum PageRow
+        {
+            Header,
+            Body
+        }
+
+        enum BodyRow
+        {
+            Prompt,
+            CodeHeader,
+            CodeEntry,
+            Button
+        }
+
+        enum BodyCol
+        {
+            FieldLabel,
+            FieldValidation
+        }
+
+        void Build()
+        {
+            var app = App.Current;
+            var vm = ViewModel = app.RegistrationCodeViewModel;
+            var fieldNameMargin = new Thickness(20, 10);
+            var fieldMargin = new Thickness(PageMarginSize, 0);
+
+            NavigationPage.SetHasNavigationBar(this, false);
+            BackgroundColor = Color.AliceBlue;
+
+            Content = new Grid
+            {
+                RowSpacing = 0,
+                RowDefinitions = Rows.Define((PageRow.Header, Auto), (PageRow.Body, Star)),
+
+                Children =
+                {
+                    PageHeader.Create(
+                        PageMarginSize,
+                        nameof(vm.RegistrationTitle), nameof(vm.RegistrationSubTitle),
+                        returnToPreviousViewCommandPropertyName: nameof(vm.ReturnToPreviousViewCommand),
+                        centerTitle:true
+                    )  .Row (PageRow.Header),
+
+                    new ScrollView
+                    {
+                        Content = new Grid
+                        {
+                            RowSpacing = 0,
+                            RowDefinitions = Rows.Define(
+                                (BodyRow.Prompt    , 170 ),
+                                (BodyRow.CodeHeader, 75  ),
+                                (BodyRow.CodeEntry , Auto),
+                                (BodyRow.Button    , Auto)
+                            ),
+
+                            ColumnDefinitions = Columns.Define(
+                                (BodyCol.FieldLabel     , 160 ),
+                                (BodyCol.FieldValidation, Star)
+                            ),
+
+                            Children =
+                            {
+                                new Label { LineBreakMode = LineBreakMode.WordWrap } .Font (15) .Bold ()
+                                           .Row (BodyRow.Prompt) .ColumnSpan (All<BodyCol>()) .FillExpandHorizontal () .CenterVertical () .Margin (fieldNameMargin) .TextCenterHorizontal ()
+                                           .Bind (nameof(vm.RegistrationPrompt)),
+
+                                new Label { Text = "Registration code" } .Bold ()
+                                           .Row (BodyRow.CodeHeader) .Column(BodyCol.FieldLabel) .Bottom () .Margin (fieldNameMargin),
+
+                                new Label { } .Italic ()
+                                           .Row (BodyRow.CodeHeader) .Column (BodyCol.FieldValidation) .Right () .Bottom () .Margin (fieldNameMargin)
+                                           .Bind (nameof(vm.RegistrationCodeValidationMessage)),
+
+                                new Entry { Placeholder = "E.g. 123456", Keyboard = Keyboard.Numeric, BackgroundColor = Color.AliceBlue, TextColor = Color.Black } .Font (15)
+                                           .Row (BodyRow.CodeEntry) .ColumnSpan (All<BodyCol>()) .Margin (fieldMargin) .Height (44)
+                                           .Bind (nameof(vm.RegistrationCode), BindingMode.TwoWay),
+
+                                new Button { Text = "Verify" } .Style (FilledButton)
+                                            .Row (BodyRow.Button) .ColumnSpan (All<BodyCol>()) .FillExpandHorizontal () .Margin (PageMarginSize)
+                                            .Bind (Button.IsVisibleProperty, nameof(vm.CanVerifyRegistrationCode))
+                                            .Bind (nameof(vm.VerifyRegistrationCodeCommand)),
+                            }
+                        }
+                    } .Row (PageRow.Body)
+                }
+            };
+        }
+    }
+}

Docs/CSharpMarkupDemos/README.md

@@ -0,0 +1,20 @@
+---
+name: Xamarin.Forms - C# markup
+description: "This sample demonstrates how to use C# markup to simplify the process of building declarative Xamarin.Forms user interfaces in C#."
+page_type: sample
+languages:
+- csharp
+products:
+- xamarin
+extensions:
+    tags:
+    - ui
+urlFragment: userinterface-csharpmarkupdemos
+---
+# C# markup
+
+This sample demonstrates how to use C# markup to simplify the process of building declarative Xamarin.Forms user interfaces in C#.
+
+For more information about this sample, see [Xamarin.Forms C# markup](https://docs.microsoft.com/xamarin/xamarin-forms/user-interface/csharp-markup).
+
+![C# markup application screenshot](Screenshots/01All.png "C# markup UI")

Docs/SignalR/AzureSignalR/AzureSignalR.sln

@@ -0,0 +1,315 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.28917.181
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ChatServer", "ChatServer\ChatServer.csproj", "{908868D1-CD1D-4CD5-816F-B6CB76085BF8}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChatClient.Android", "ChatClient.Android\ChatClient.Android.csproj", "{235066C3-8438-4C5E-BF69-F4735D6C134D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChatClient.iOS", "ChatClient.iOS\ChatClient.iOS.csproj", "{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ChatClient.UWP", "ChatClient.UWP\ChatClient.UWP.csproj", "{1DB2895B-FED2-4944-8E1B-0C494FBCA4C3}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ChatClient", "ChatClient\ChatClient.csproj", "{2ABF0D0F-7808-4A36-9AF1-4A07C573EC47}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Ad-Hoc|Any CPU = Ad-Hoc|Any CPU
+		Ad-Hoc|ARM = Ad-Hoc|ARM
+		Ad-Hoc|iPhone = Ad-Hoc|iPhone
+		Ad-Hoc|iPhoneSimulator = Ad-Hoc|iPhoneSimulator
+		Ad-Hoc|x64 = Ad-Hoc|x64
+		Ad-Hoc|x86 = Ad-Hoc|x86
+		AppStore|Any CPU = AppStore|Any CPU
+		AppStore|ARM = AppStore|ARM
+		AppStore|iPhone = AppStore|iPhone
+		AppStore|iPhoneSimulator = AppStore|iPhoneSimulator
+		AppStore|x64 = AppStore|x64
+		AppStore|x86 = AppStore|x86
+		Debug|Any CPU = Debug|Any CPU
+		Debug|ARM = Debug|ARM
+		Debug|iPhone = Debug|iPhone
+		Debug|iPhoneSimulator = Debug|iPhoneSimulator
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|Any CPU = Release|Any CPU
+		Release|ARM = Release|ARM
+		Release|iPhone = Release|iPhone
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|Any CPU.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|Any CPU.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|ARM.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|ARM.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|iPhone.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|iPhone.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|iPhoneSimulator.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|x64.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|x64.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|x86.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Ad-Hoc|x86.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|Any CPU.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|Any CPU.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|ARM.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|ARM.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|iPhone.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|iPhone.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|iPhoneSimulator.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|x64.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|x64.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|x86.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.AppStore|x86.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|ARM.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|x64.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Debug|x86.Build.0 = Debug|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|ARM.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|ARM.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|iPhone.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|x64.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|x64.Build.0 = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|x86.ActiveCfg = Release|Any CPU
+		{908868D1-CD1D-4CD5-816F-B6CB76085BF8}.Release|x86.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|Any CPU.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|Any CPU.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|Any CPU.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|ARM.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|ARM.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|ARM.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhone.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhone.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhone.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhoneSimulator.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|iPhoneSimulator.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x64.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x64.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x64.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x86.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x86.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Ad-Hoc|x86.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|Any CPU.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|Any CPU.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|Any CPU.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|ARM.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|ARM.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|ARM.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhone.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhone.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhone.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhoneSimulator.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|iPhoneSimulator.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x64.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x64.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x64.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x86.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x86.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.AppStore|x86.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|Any CPU.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|ARM.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|ARM.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|ARM.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhone.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|iPhoneSimulator.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x64.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x64.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x86.Build.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Debug|x86.Deploy.0 = Debug|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|Any CPU.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|ARM.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|ARM.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|ARM.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhone.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhone.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|iPhoneSimulator.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x64.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x64.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x64.Deploy.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x86.ActiveCfg = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x86.Build.0 = Release|Any CPU
+		{235066C3-8438-4C5E-BF69-F4735D6C134D}.Release|x86.Deploy.0 = Release|Any CPU
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|Any CPU.ActiveCfg = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|ARM.ActiveCfg = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|iPhone.ActiveCfg = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|iPhone.Build.0 = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|iPhoneSimulator.ActiveCfg = Ad-Hoc|iPhoneSimulator
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|iPhoneSimulator.Build.0 = Ad-Hoc|iPhoneSimulator
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|x64.ActiveCfg = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.Ad-Hoc|x86.ActiveCfg = Ad-Hoc|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.AppStore|Any CPU.ActiveCfg = AppStore|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.AppStore|ARM.ActiveCfg = AppStore|iPhone
+		{0C4F66D7-75F4-4FE0-AFC1-8605FD3DA4DF}.AppStore|iPhone.ActiveCfg = AppStore|iPhone
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+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {3C0AEC4A-3ED9-4820-8D2D-960DD789163A}
+	EndGlobalSection
+EndGlobal

Docs/SignalR/AzureSignalR/ChatClient.Android/Assets/AboutAssets.txt

@@ -0,0 +1,19 @@
+Any raw assets you want to be deployed with your application can be placed in
+this directory (and child directories) and given a Build Action of "AndroidAsset".
+
+These files will be deployed with you package and will be accessible using Android's
+AssetManager, like this:
+
+public class ReadAsset : Activity
+{
+    protected override void OnCreate (Bundle bundle)
+    {
+        base.OnCreate (bundle);
+
+        InputStream input = Assets.Open ("my_asset.txt");
+    }
+}
+
+Additionally, some Android functions will automatically load asset files:
+
+Typeface tf = Typeface.CreateFromAsset (Context.Assets, "fonts/samplefont.ttf");

Docs/SignalR/AzureSignalR/ChatClient.Android/ChatClient.Android.csproj

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{235066C3-8438-4C5E-BF69-F4735D6C134D}</ProjectGuid>
+    <ProjectTypeGuids>{EFBA0AD7-5A72-4C68-AF49-83D382785DCF};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <TemplateGuid>{c9e5eea5-ca05-42a1-839b-61506e0a37df}</TemplateGuid>
+    <OutputType>Library</OutputType>
+    <RootNamespace>ChatClient.Droid</RootNamespace>
+    <AssemblyName>ChatClient.Android</AssemblyName>
+    <AndroidApplication>True</AndroidApplication>
+    <AndroidResgenFile>Resources\Resource.designer.cs</AndroidResgenFile>
+    <AndroidResgenClass>Resource</AndroidResgenClass>
+    <AndroidManifest>Properties\AndroidManifest.xml</AndroidManifest>
+    <MonoAndroidResourcePrefix>Resources</MonoAndroidResourcePrefix>
+    <MonoAndroidAssetsPrefix>Assets</MonoAndroidAssetsPrefix>
+    <AndroidUseLatestPlatformSdk>false</AndroidUseLatestPlatformSdk>
+    <TargetFrameworkVersion>v9.0</TargetFrameworkVersion>
+    <AndroidHttpClientHandlerType>Xamarin.Android.Net.AndroidClientHandler</AndroidHttpClientHandlerType>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>portable</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidLinkMode>None</AndroidLinkMode>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <AndroidManagedSymbols>true</AndroidManagedSymbols>
+    <AndroidUseSharedRuntime>false</AndroidUseSharedRuntime>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="Mono.Android" />
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json">
+      <Version>12.0.2</Version>
+    </PackageReference>
+    <PackageReference Include="Xamarin.Forms" Version="4.8.0.1687" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="MainActivity.cs" />
+    <Compile Include="Resources\Resource.Designer.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\AboutResources.txt" />
+    <None Include="Assets\AboutAssets.txt" />
+    <None Include="Properties\AndroidManifest.xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\layout\Tabbar.axml" />
+    <AndroidResource Include="Resources\layout\Toolbar.axml" />
+    <AndroidResource Include="Resources\values\styles.xml" />
+    <AndroidResource Include="Resources\values\colors.xml" />
+    <AndroidResource Include="Resources\mipmap-anydpi-v26\icon.xml" />
+    <AndroidResource Include="Resources\mipmap-anydpi-v26\icon_round.xml" />
+    <AndroidResource Include="Resources\mipmap-hdpi\Icon.png" />
+    <AndroidResource Include="Resources\mipmap-hdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-mdpi\Icon.png" />
+    <AndroidResource Include="Resources\mipmap-mdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xhdpi\Icon.png" />
+    <AndroidResource Include="Resources\mipmap-xhdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xxhdpi\Icon.png" />
+    <AndroidResource Include="Resources\mipmap-xxhdpi\launcher_foreground.png" />
+    <AndroidResource Include="Resources\mipmap-xxxhdpi\Icon.png" />
+    <AndroidResource Include="Resources\mipmap-xxxhdpi\launcher_foreground.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Resources\drawable-hdpi\" />
+    <Folder Include="Resources\drawable-xhdpi\" />
+    <Folder Include="Resources\drawable-xxhdpi\" />
+    <Folder Include="Resources\drawable-xxxhdpi\" />
+    <Folder Include="Resources\drawable\" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\ChatClient\ChatClient.csproj">
+      <Project>{2ABF0D0F-7808-4A36-9AF1-4A07C573EC47}</Project>
+      <Name>ChatClient</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
+</Project>

Docs/SignalR/AzureSignalR/ChatClient.Android/MainActivity.cs

@@ -0,0 +1,20 @@
+using Android.App;
+using Android.Content.PM;
+using Android.OS;
+
+namespace ChatClient.Droid
+{
+    [Activity(Label = "ChatClient", Icon = "@mipmap/icon", Theme = "@style/MainTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation)]
+    public class MainActivity : global::Xamarin.Forms.Platform.Android.FormsAppCompatActivity
+    {
+        protected override void OnCreate(Bundle savedInstanceState)
+        {
+            TabLayoutResource = Resource.Layout.Tabbar;
+            ToolbarResource = Resource.Layout.Toolbar;
+
+            base.OnCreate(savedInstanceState);
+            global::Xamarin.Forms.Forms.Init(this, savedInstanceState);
+            LoadApplication(new App());
+        }
+    }
+}

Docs/SignalR/AzureSignalR/ChatClient.Android/Properties/AndroidManifest.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="1.0" package="com.xamarin.azuresignalr">
+	<uses-sdk android:minSdkVersion="21" />
+	<application android:label="ChatClient.Android"></application>
+</manifest>

Docs/SignalR/AzureSignalR/ChatClient.Android/Properties/AssemblyInfo.cs

@@ -0,0 +1,34 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using Android.App;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("ChatClient.Android")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("ChatClient.Android")]
+[assembly: AssemblyCopyright("Copyright ©  2014")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+[assembly: ComVisible(false)]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+
+// Add some common permissions, these can be removed if not needed
+[assembly: UsesPermission(Android.Manifest.Permission.Internet)]
+[assembly: UsesPermission(Android.Manifest.Permission.WriteExternalStorage)]

Docs/SignalR/AzureSignalR/ChatClient.Android/Resources/AboutResources.txt

@@ -0,0 +1,50 @@
+Images, layout descriptions, binary blobs and string dictionaries can be included 
+in your application as resource files.  Various Android APIs are designed to 
+operate on the resource IDs instead of dealing with images, strings or binary blobs 
+directly.
+
+For example, a sample Android app that contains a user interface layout (main.xml),
+an internationalization string table (strings.xml) and some icons (drawable-XXX/icon.png) 
+would keep its resources in the "Resources" directory of the application:
+
+Resources/
+    drawable-hdpi/
+        icon.png
+
+    drawable-ldpi/
+        icon.png
+
+    drawable-mdpi/
+        icon.png
+
+    layout/
+        main.xml
+
+    values/
+        strings.xml
+
+In order to get the build system to recognize Android resources, set the build action to
+"AndroidResource".  The native Android APIs do not operate directly with filenames, but 
+instead operate on resource IDs.  When you compile an Android application that uses resources, 
+the build system will package the resources for distribution and generate a class called
+"Resource" that contains the tokens for each one of the resources included. For example, 
+for the above Resources layout, this is what the Resource class would expose:
+
+public class Resource {
+    public class drawable {
+        public const int icon = 0x123;
+    }
+
+    public class layout {
+        public const int main = 0x456;
+    }
+
+    public class strings {
+        public const int first_string = 0xabc;
+        public const int second_string = 0xbcd;
+    }
+}
+
+You would then use R.drawable.icon to reference the drawable/icon.png file, or Resource.layout.main 
+to reference the layout/main.xml file, or Resource.strings.first_string to reference the first 
+string in the dictionary file values/strings.xml.

Docs/SignalR/AzureSignalR/ChatClient.Android/Resources/layout/Tabbar.axml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.design.widget.TabLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/sliding_tabs"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?attr/colorPrimary"
+    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+    app:tabIndicatorColor="@android:color/white"
+    app:tabGravity="fill"
+    app:tabMode="fixed" />

Docs/SignalR/AzureSignalR/ChatClient.Android/Resources/layout/Toolbar.axml

@@ -0,0 +1,9 @@
+<android.support.v7.widget.Toolbar
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/toolbar"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?attr/colorPrimary"
+    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
+    android:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
+

Docs/SignalR/AzureSignalR/ChatClient.Android/Resources/mipmap-anydpi-v26/icon.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/launcher_background" />
+    <foreground android:drawable="@mipmap/launcher_foreground" />
+</adaptive-icon>