Initial commit

2019/Technical/Readme.md

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+These are the session decks that our .NET Conf 2019 speakers presented. The demo code for the keynote is also available in the demo folder. 
+
+A HUGE thank you to all our fantastic speakers and presentations. Please feel free to reuse this content in your own presentations and events. 
+If you do this, we do ask as a common courtesey to attribute the content to the origial author as appropriate. 
+
+All sessions are also on-demand on the [Visual Studio YouTube channel](https://www.youtube.com/playlist?list=PLReL099Y5nRd04p81Q7p5TtyjCrj9tz1t). 
+Also check out more .NET presentations and workshops here: [https://github.com/dotnet-presentations/home](https://github.com/dotnet-presentations/home)
+
+See you next year!

2019/Technical/keynote/.dockerignore

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+**/.classpath
+**/.dockerignore
+**/.env
+**/.git
+**/.gitignore
+**/.project
+**/.settings
+**/.toolstarget
+**/.vs
+**/.vscode
+**/*.*proj.user
+**/*.dbmdl
+**/*.jfm
+**/azds.yaml
+**/bin
+**/charts
+**/docker-compose*
+**/Dockerfile*
+**/node_modules
+**/npm-debug.log
+**/obj
+**/secrets.dev.yaml
+**/values.dev.yaml
+LICENSE
+README.md

2019/Technical/keynote/.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_i.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+!BlazorWeather.Electron/packages/*
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk 
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush
+.cr/
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output 
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder 
+.mfractor/

2019/Technical/keynote/BlazorWeather.Core/App.razor

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+<Router AppAssembly="@typeof(App).Assembly">
+    <Found Context="routeData">
+        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
+    </Found>
+    <NotFound>
+        <LayoutView Layout="@typeof(MainLayout)">
+            <p>Sorry, there's nothing at this address.</p>
+        </LayoutView>
+    </NotFound>
+</Router>

2019/Technical/keynote/BlazorWeather.Core/BlazorWeather.Core.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Razor">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.1</TargetFramework>
+    <RazorLangVersion>3.0</RazorLangVersion>
+    <RootNamespace>BlazorWeather</RootNamespace>
+  </PropertyGroup>
+
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Components" Version="3.0.0" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.Web" Version="3.0.0" />
+  </ItemGroup>
+
+
+  <ItemGroup>
+    <ProjectReference Include="..\WeatherClientLib\WeatherClientLib.csproj" />
+    <ProjectReference Include="..\WeatherServiceML.Abstractions\WeatherServiceML.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

2019/Technical/keynote/BlazorWeather.Core/MLWeatherCam.razor

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+@inject IWeatherClassifier WeatherClassifier
+
+<h3>Weather Cam</h3>
+
+<div class="image-predictor">
+    <div class="image-selector">
+        @foreach (var place in cams.Keys)
+        {
+            <button class="@(cams[place] == camUrl ? "btn-link selected" : "btn-link")"
+                    @onclick="() => Update(cams[place])">
+                @place
+                </button>
+            }
+    </div>
+
+    <div class="result-pane">
+        <img src="@camUrl" height="300" />
+        <span class="result-label">@(weatherDescription == null ? "Hmm, the weather looks..." : weatherDescription)</span>
+    </div>
+</div>
+
+
+@code {
+    IDictionary<string, string> cams = new Dictionary<string, string>()
+    {
+        { "Century Link Field", "weatherImages/century-link.png" },
+        { "Paramount Theater", "weatherImages/paramount-theater.jpg" },
+        { "Golden Gardens Park", "weatherImages/golden-gardens.jpg" }
+    };
+    string camUrl;
+    string weatherDescription;
+
+    protected override Task OnParametersSetAsync()
+    {
+        return Update(cams.Values.First());
+    }
+
+    async Task Update(string imgUrl)
+    {
+        weatherDescription = null;
+        camUrl = imgUrl;
+        weatherDescription = await WeatherClassifier.ClassifyWeather(camUrl);
+    }
+}

2019/Technical/keynote/BlazorWeather.Core/Pages/Forecast.razor

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+@page "/"
+@implements IDisposable
+@inject IWeatherForecastService WeatherForecastService
+
+@if (currentWeather == null)
+{
+    <p><em>Loading...</em></p>
+}
+else
+{
+    <div id="main" class="@GetBackgroundClass()">
+        <div class="weather-now">
+            <h1>SEATTLE</h1>
+            <div class="location-img"></div>
+            <div class="temperature">
+                @GetTemperature()
+                <TemperatureUnitPicker @bind-TemperatureUnit="temperatureUnit" />
+            </div>
+            <div class="summary">
+                <img class="weather-img" src="@currentWeather.WeartherUri" alt="@currentWeather.WeatherText" />
+                @currentWeather.WeatherText
+            </div>
+            <div class="update-info">Updated @GetTimeToDisplay()</div>
+            <div class="metrics">
+                <div>UV index <p>@currentWeather.UVIndex</p></div>
+                <div>Barometer <p>@currentWeather.Pressure</p></div>
+                <div>Humidity <p>@currentWeather.RelativeHumidity%</p></div>
+                <div>Wind <p>@currentWeather.WindSpeed <span class="wind-details">mph @currentWeather.WindDirection</span></p></div>
+            </div>
+            <MLWeatherCam />
+        </div>
+    </div>
+}
+
+
+@code {
+    WeatherResponse currentWeather;
+    string temperatureUnit = "F";
+
+    CancellationTokenSource streamingWeatherCTS = new CancellationTokenSource();
+
+    protected override async Task OnInitializedAsync()
+    {
+        currentWeather = await WeatherForecastService.GetWeather();
+    }
+
+    protected override void OnAfterRender(bool firstRender)
+    {
+        if (firstRender)
+        {
+            _ = GetWeatherUpdates();
+        }
+    }
+
+    async Task GetWeatherUpdates()
+    {
+        await foreach (var weatherResponse in WeatherForecastService.GetStreamingWeather(streamingWeatherCTS.Token))
+        {
+            currentWeather = weatherResponse;
+            StateHasChanged();
+        }
+    }
+
+    string GetBackgroundClass()
+    {
+        if (currentWeather == null)
+        {
+            return string.Empty;
+        }
+        else if (!currentWeather.IsDayTime)
+        {
+            return "night";
+        }
+        else if (currentWeather.Temperature > 60)
+        {
+            return "warm";
+        }
+        else
+        {
+            return "cold";
+        }
+    }
+
+    void SwitchTemperatureUnit()
+    {
+        temperatureUnit = temperatureUnit == "F" ? "C" : "F";
+    }
+
+    float GetTemperature()
+        => temperatureUnit == "F" ? currentWeather.Temperature : TemperatureAsCelsius(currentWeather.Temperature);
+
+    float TemperatureAsCelsius(float f)
+        => (float)Math.Round((f - 23f) / 1.8f);
+
+    string GetTimeToDisplay()
+        => currentWeather.RetrievedTime.ToDateTimeOffset().ToLocalTime().ToString("T");
+
+    void IDisposable.Dispose()
+    {
+        streamingWeatherCTS.Cancel();
+    }
+}

2019/Technical/keynote/BlazorWeather.Core/Shared/MainLayout.razor

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+@inherits LayoutComponentBase
+
+@Body
+

2019/Technical/keynote/BlazorWeather.Core/TemperatureUnitPicker.razor

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+<div class="unit-switch" @onclick="SwitchTemperatureUnit">
+    <span class="temp-unit">@TemperatureUnit</span>
+    <span class="temp-unit-option">/ @(TemperatureUnit == "F" ? "C" : "F")</span>
+</div>
+
+@code {
+    [Parameter]
+    public string TemperatureUnit { get; set; } = "F";
+
+    [Parameter]
+    public EventCallback<string> TemperatureUnitChanged { get; set; }
+
+    Task SwitchTemperatureUnit()
+    {
+        TemperatureUnit = TemperatureUnit == "F" ? "C" : "F";
+        return TemperatureUnitChanged.InvokeAsync(TemperatureUnit);
+    }
+}

2019/Technical/keynote/BlazorWeather.Core/_Imports.razor

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+@using System.Net.Http
+@using System.Threading
+@using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using Microsoft.JSInterop
+@using BlazorWeather
+@using BlazorWeather.Shared
+@using Weather
+@using Google.Protobuf.WellKnownTypes
+@using Grpc.Core
+@using WeatherClientLib
+@using WeatherServiceML

2019/Technical/keynote/BlazorWeather.Core/wwwroot/weather.css

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+* {
+    box-sizing: border-box;
+}
+
+html, body {
+    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    color: white;
+    height: 100%;
+    margin: 0;
+}
+
+#main {
+    min-height: 100%;
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    padding: 1.5rem;
+}
+
+.weather-now, .weather-graph {
+    flex-grow: 1;
+    margin: 1.5rem;
+    width: calc(50% - 3rem);
+}
+
+.weather-now {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+    .weather-now h1 {
+        font-size: 1.5rem;
+        font-weight: 200;
+        letter-spacing: 1px;
+        text-align: center;
+        margin: 0 0 1rem 0;
+    }
+
+.location-img {
+    flex-grow: 1;
+    background: url('spaceneedle.png');
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: center center;
+    width: 100%;
+}
+
+    .location-img img {
+        width: 100%;
+    }
+
+.temperature {
+    font-size: 6rem;
+    display: inline-block;
+    position: relative;
+}
+
+    .temperature::after {
+        content: "°";
+        position: absolute;
+        font-size: 5rem;
+        top: 0.3rem;
+        left: 100%;
+    }
+
+.unit-switch {
+    position: absolute;
+    bottom: 0.75rem;
+    left: calc(100% + 2rem);
+    width: 200px;
+    font-size: 3rem;
+    cursor: pointer;
+}
+
+.temp-unit-option {
+    font-size: 1.5rem;
+    opacity: 0.5;
+}
+
+.summary {
+    text-transform: uppercase;
+    font-size: 2rem;
+    margin-bottom: 0.5rem;
+    display: flex;
+    align-items: center;
+    padding-right: 20px;
+}
+
+.weather-img {
+    margin-right: -10px;
+    margin-top: 2px;
+}
+
+.metrics {
+    display: flex;
+    margin-top: 2rem;
+}
+
+    .metrics > div {
+        background: linear-gradient(-45deg, rgba(255,255,255,0.05), rgba(255,255,255,0.35));
+        padding: 0.75rem;
+        text-align: center;
+        font-size: 0.8rem;
+        font-weight: 600;
+        border-radius: 1rem;
+        border-bottom-right-radius: 0;
+    }
+
+        .metrics > div:not(:last-of-type) {
+            margin-right: 1rem;
+        }
+
+        .metrics > div p {
+            margin: 0;
+            font-weight: 200;
+            font-size: 1.2rem;
+        }
+
+.update-info {
+    text-transform: uppercase;
+}
+
+.warm {
+    background-image: linear-gradient(#F6CC66, #FCA184);
+}
+
+.cold {
+    background-image: linear-gradient(#BDE3FA, #A5C9FD);
+}
+
+.night {
+    background-image: linear-gradient(#172941, #3C6683);
+}
+
+@media (max-width: 767.98px) {
+    #main {
+        flex-direction: column;
+    }
+
+    .weather-now, .weather-graph {
+        width: unset;
+    }
+
+    .location-img {
+        min-height: 30vh;
+    }
+
+    .weather-graph {
+        height: 50vh;
+        margin: auto;
+    }
+
+    .wind-details {
+        display: none; /* not enough space on mobile */
+    }
+}
+
+.btn-link {
+    background: transparent;
+    border: 1px solid #fff;
+    padding: 12px;
+    font-size: 15px;
+    /*optional*/
+    /*input has OS specific font-family*/
+    border-radius: 1rem;
+    border-bottom-right-radius: 0;
+    text-decoration: none;
+    cursor: pointer;
+    color: #fff;
+    margin-bottom: 10px;
+}
+
+    .btn-link.selected {
+        background: linear-gradient(-45deg, rgba(255,255,255,0.05), rgba(255,255,255,0.35));
+        font-weight: bold;
+    }
+
+.image-predictor {
+    margin-top: 20px;
+    display: flex;
+}
+
+.result-label {
+    float: left;
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    background: rgba(0,0,0,0.5);
+    text-align: center;
+    font-size: 1.25rem;
+    padding: 12px;
+    border-radius: 1rem 1rem 0 0;
+}
+
+.result-pane {
+    float: left;
+    position: relative;
+}
+
+    .result-pane img {
+        border-radius: 1rem;
+        border-bottom-right-radius: 0;
+    }
+
+.image-selector {
+    display: flex;
+    flex-direction: column;
+    margin-right: 10px;
+    width: 200px;
+    margin-left: -200px;
+}
+
+h3 {
+    margin-top: 40px;
+    font-size: 2rem;
+    margin-bottom: 0;
+}

2019/Technical/keynote/BlazorWeather.Electron/BlazorWeather.Electron.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Razor">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <OutputPath>bin\$(Configuration)</OutputPath>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <SignAssembly>false</SignAssembly>
+    <LangVersion>preview</LangVersion>
+    <DefaultItemExcludes>${DefaultItemExcludes};node_modules\**;package-lock.json</DefaultItemExcludes>
+    <RazorLangVersion>3.0</RazorLangVersion>
+    <RestoreAdditionalProjectSources>
+      $(RestoreAdditionalProjectSources);
+      .\packages;
+    </RestoreAdditionalProjectSources>
+    <RootNamespace>BlazorWeather</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Components.Electron" Version="0.1.0-preview1" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="3.0.0" />
+  </ItemGroup>
+
+  <Target Name="EnsureNpmRestored" BeforeTargets="CoreBuild" Condition="!Exists('node_modules')">
+    <Message Importance="high" Text="Restoring dependencies using 'npm'. This may take several minutes..." />
+    <Exec Command="npm install" />
+  </Target>
+
+  <ItemGroup>
+    <None Remove="packages\**" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorWeather.Core\BlazorWeather.Core.csproj" />
+    <ProjectReference Include="..\WeatherServiceML.Abstractions\WeatherServiceML.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

2019/Technical/keynote/BlazorWeather.Electron/Program.cs

@@ -0,0 +1,12 @@
+using Microsoft.AspNetCore.Components.Electron;
+
+namespace BlazorWeather
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            ComponentsElectron.Run<Startup>("wwwroot/index.html");
+        }
+    }
+}

2019/Technical/keynote/BlazorWeather.Electron/Startup.cs

@@ -0,0 +1,31 @@
+using Microsoft.AspNetCore.Components.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using static Weather.Weather;
+using WeatherClientLib;
+using System;
+using Microsoft.Extensions.Configuration;
+using WeatherServiceML;
+
+namespace BlazorWeather
+{
+    public class Startup
+    {
+        public void ConfigureServices(IServiceCollection services)
+        {
+            var configuration = new ConfigurationBuilder()
+                .AddJsonFile("appsettings.json", true, true)
+                .Build();
+
+            services.AddGrpcWeatherForecastService(options =>
+            {
+                options.Address = new Uri(configuration["WeatherServiceUri"]);
+            });
+            services.AddScoped<IWeatherClassifier, WasmWeatherClassifier>();
+        }
+
+        public void Configure(IComponentsApplicationBuilder app)
+        {
+            app.AddComponent<App>("app");
+        }
+    }
+}

2019/Technical/keynote/BlazorWeather.Electron/appsettings.Development.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}

2019/Technical/keynote/BlazorWeather.Electron/appsettings.json

@@ -0,0 +1,11 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "AllowedHosts": "*",
+  "WeatherServiceUri": "https://localhost:5001"
+}

2019/Technical/keynote/BlazorWeather.Electron/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "components-electron-sample",
+  "private": true,
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "electron ."
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "electron": "^3.0.4",
+    "socket.io": "^2.0.3"
+  }
+}

2019/Technical/keynote/BlazorWeather.Electron/wwwroot/css/site.css

@@ -0,0 +1,219 @@
+* {
+    box-sizing: border-box;
+}
+
+html, body {
+    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
+    color: white;
+    height: 100%;
+    margin: 0;
+}
+
+#main {
+    min-height: 100%;
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    padding: 1.5rem;
+}
+
+.weather-now, .weather-graph {
+    flex-grow: 1;
+    margin: 1.5rem;
+    width: calc(50% - 3rem);
+}
+
+.weather-now {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+}
+
+    .weather-now h1 {
+        font-size: 1.5rem;
+        font-weight: 200;
+        letter-spacing: 1px;
+        text-align: center;
+        margin: 0 0 1rem 0;
+    }
+
+.location-img {
+    flex-grow: 1;
+    background: url('spaceneedle.png');
+    background-size: contain;
+    background-repeat: no-repeat;
+    background-position: center center;
+    width: 100%;
+}
+
+    .location-img img {
+        width: 100%;
+    }
+
+.temperature {
+    font-size: 6rem;
+    display: inline-block;
+    position: relative;
+}
+
+    .temperature::after {
+        content: "°";
+        position: absolute;
+        font-size: 5rem;
+        top: 0.3rem;
+        left: 100%;
+    }
+
+.unit-switch {
+    position: absolute;
+    bottom: 0.75rem;
+    left: calc(100% + 2rem);
+    width: 200px;
+    font-size: 3rem;
+    cursor: pointer;
+}
+
+.temp-unit-option {
+    font-size: 1.5rem;
+    opacity: 0.5;
+}
+
+.summary {
+    text-transform: uppercase;
+    font-size: 2rem;
+    margin-bottom: 0.5rem;
+    display: flex;
+    align-items: center;
+    padding-right: 20px;
+}
+
+.weather-img {
+    margin-right: -10px;
+    margin-top: 2px;
+}
+
+.metrics {
+    display: flex;
+    margin-top: 2rem;
+}
+
+    .metrics > div {
+        background: linear-gradient(-45deg, rgba(255,255,255,0.05), rgba(255,255,255,0.35));
+        padding: 0.75rem;
+        text-align: center;
+        font-size: 0.8rem;
+        font-weight: 600;
+        border-radius: 1rem;
+        border-bottom-right-radius: 0;
+    }
+
+        .metrics > div:not(:last-of-type) {
+            margin-right: 1rem;
+        }
+
+        .metrics > div p {
+            margin: 0;
+            font-weight: 200;
+            font-size: 1.2rem;
+        }
+
+.update-info {
+    text-transform: uppercase;
+}
+
+.warm {
+    background-image: linear-gradient(#F6CC66, #FCA184);
+}
+
+.cold {
+    background-image: linear-gradient(#BDE3FA, #A5C9FD);
+}
+
+.night {
+    background-image: linear-gradient(#172941, #3C6683);
+}
+
+@media (max-width: 767.98px) {
+    #main {
+        flex-direction: column;
+    }
+
+    .weather-now, .weather-graph {
+        width: unset;
+    }
+
+    .location-img {
+        min-height: 30vh;
+    }
+
+    .weather-graph {
+        height: 50vh;
+        margin: auto;
+    }
+
+    .wind-details {
+        display: none; /* not enough space on mobile */
+    }
+}
+
+.btn-link {
+    background: transparent;
+    border: 1px solid #fff;
+    padding: 12px;
+    font-size: 15px;
+    /*optional*/
+    /*input has OS specific font-family*/
+    border-radius: 1rem;
+    border-bottom-right-radius: 0;
+    text-decoration: none;
+    cursor: pointer;
+    color: #fff;
+    margin-bottom: 10px;
+}
+
+    .btn-link.selected {
+        background: linear-gradient(-45deg, rgba(255,255,255,0.05), rgba(255,255,255,0.35));
+        font-weight: bold;
+    }
+
+.image-predictor {
+    margin-top: 20px;
+    display: flex;
+}
+
+.result-label {
+    float: left;
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    background: rgba(0,0,0,0.5);
+    text-align: center;
+    font-size: 1.25rem;
+    padding: 12px;
+    border-radius: 1rem 1rem 0 0;
+}
+
+.result-pane {
+    float: left;
+    position: relative;
+}
+
+    .result-pane img {
+        border-radius: 1rem;
+        border-bottom-right-radius: 0;
+    }
+
+.image-selector {
+    display: flex;
+    flex-direction: column;
+    margin-right: 10px;
+    width: 200px;
+    margin-left: -200px;
+}
+
+h3 {
+    margin-top: 40px;
+    font-size: 2rem;
+    margin-bottom: 0;
+}

2019/Technical/keynote/BlazorWeather.Electron/wwwroot/index.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Weather.BlazorElectron</title>
+    <base href="./" />
+    <link href="css/site.css" rel="stylesheet" />
+</head>
+<body>
+    <app>Loading...</app>
+
+    <script src="../bin/Debug/netcoreapp3.0/electron-js/components.electron.js"></script>
+</body>
+</html>

2019/Technical/keynote/BlazorWeather.Server/BlazorWeather.Server.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <RootNamespace>BlazorWeather</RootNamespace>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorWeather.Core\BlazorWeather.Core.csproj" />
+    <ProjectReference Include="..\WeatherServiceML\WeatherServiceML.csproj" />
+  </ItemGroup>
+
+</Project>

2019/Technical/keynote/BlazorWeather.Server/Pages/Error.razor

@@ -0,0 +1,16 @@
+@page "/error"
+
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>

2019/Technical/keynote/BlazorWeather.Server/Pages/_Host.cshtml

@@ -0,0 +1,19 @@
+@page "/"
+@namespace BlazorWeather.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>Weather.Blazor</title>
+    <base href="~/" />
+    <link href="_content/BlazorWeather.Core/weather.css" rel="stylesheet" />
+</head>
+<body>
+    @(await Html.RenderComponentAsync<App>(RenderMode.ServerPrerendered))
+
+    <script src="_framework/blazor.server.js"></script>
+</body>
+</html>

2019/Technical/keynote/BlazorWeather.Server/Program.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace BlazorWeather
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateHostBuilder(args).Build().Run();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<Startup>();
+                });
+    }
+}

2019/Technical/keynote/BlazorWeather.Server/Properties/launchSettings.json

@@ -0,0 +1,27 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:56911/",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "BlazorWeather.Server": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "http://localhost:56919/"
+    }
+  }
+}

2019/Technical/keynote/BlazorWeather.Server/Startup.cs

@@ -0,0 +1,66 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Components;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.HttpsPolicy;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using static Weather.Weather;
+using WeatherClientLib;
+using WeatherServiceML;
+
+namespace BlazorWeather
+{
+    public class Startup
+    {
+        public Startup(IConfiguration configuration)
+        {
+            Configuration = configuration;
+        }
+
+        public IConfiguration Configuration { get; }
+
+        // This method gets called by the runtime. Use this method to add services to the container.
+        // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=398940
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddRazorPages();
+            services.AddServerSideBlazor();
+            services.AddGrpcWeatherForecastService(options =>
+            {
+                options.Address = new Uri(Configuration["WeatherServiceUri"]);
+            });
+            services.AddScoped<IWeatherClassifier, MLWeatherClassifier>();
+        }
+
+        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
+        public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
+        {
+            if (env.IsDevelopment())
+            {
+                app.UseDeveloperExceptionPage();
+            }
+            else
+            {
+                app.UseExceptionHandler("/Error");
+                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
+                app.UseHsts();
+            }
+
+            app.UseHttpsRedirection();
+            app.UseStaticFiles();
+
+            app.UseRouting();
+
+            app.UseEndpoints(endpoints =>
+            {
+                endpoints.MapBlazorHub();
+                endpoints.MapFallbackToPage("/_Host");
+            });
+        }
+    }
+}

2019/Technical/keynote/BlazorWeather.Server/_Imports.razor

@@ -0,0 +1,14 @@
+@using System.Net.Http
+@using System.Threading
+@using Microsoft.AspNetCore.Authorization
+@using Microsoft.AspNetCore.Components.Authorization
+@using Microsoft.AspNetCore.Components.Forms
+@using Microsoft.AspNetCore.Components.Routing
+@using Microsoft.AspNetCore.Components.Web
+@using Microsoft.JSInterop
+@using BlazorWeather
+@using BlazorWeather.Shared
+@using Weather
+@using Google.Protobuf.WellKnownTypes
+@using Grpc.Core
+@using WeatherClientLib

2019/Technical/keynote/BlazorWeather.Server/appsettings.Development.json

@@ -0,0 +1,9 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Debug",
+      "System": "Information",
+      "Microsoft": "Information"
+    }
+  }
+}

2019/Technical/keynote/BlazorWeather.Server/appsettings.json

@@ -0,0 +1,11 @@
+{
+  "Logging": {
+    "LogLevel": {
+      "Default": "Information",
+      "Microsoft": "Warning",
+      "Microsoft.Hosting.Lifetime": "Information"
+    }
+  },
+  "AllowedHosts": "*",
+  "WeatherServiceUri": "https://localhost:5001"
+}

2019/Technical/keynote/BlazorWeather.WebAssembly/BlazorWeather.WebAssembly.csproj

@@ -0,0 +1,22 @@
+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.1</TargetFramework>
+    <RazorLangVersion>3.0</RazorLangVersion>
+    <RootNamespace>BlazorWeather</RootNamespace>
+    <BlazorLinkOnBuild>false</BlazorLinkOnBuild>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Blazor" Version="3.0.0-preview9.19465.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.Build" Version="3.0.0-preview9.19465.2" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.HttpClient" Version="3.0.0-preview9.19465.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.DevServer" Version="3.0.0-preview9.19465.2" PrivateAssets="all" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlazorWeather.Core\BlazorWeather.Core.csproj" />
+    <ProjectReference Include="..\WeatherServiceML.Abstractions\WeatherServiceML.Abstractions.csproj" />
+  </ItemGroup>
+
+</Project>

2019/Technical/keynote/BlazorWeather.WebAssembly/Program.cs

@@ -0,0 +1,16 @@
+using Microsoft.AspNetCore.Blazor.Hosting;
+
+namespace BlazorWeather
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateHostBuilder(args).Build().Run();
+        }
+
+        public static IWebAssemblyHostBuilder CreateHostBuilder(string[] args) =>
+            BlazorWebAssemblyHost.CreateDefaultBuilder()
+                .UseBlazorStartup<Startup>();
+    }
+}

2019/Technical/keynote/BlazorWeather.WebAssembly/Properties/launchSettings.json

@@ -0,0 +1,27 @@
+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:56909/",
+      "sslPort": 0
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "BlazorWeather.WebAssembly": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      },
+      "applicationUrl": "http://localhost:56912/"
+    }
+  }
+}

2019/Technical/keynote/BlazorWeather.WebAssembly/Startup.cs

@@ -0,0 +1,24 @@
+using Microsoft.AspNetCore.Components.Builder;
+using Microsoft.Extensions.DependencyInjection;
+using WeatherServiceML;
+using WeatherClientLib;
+
+namespace BlazorWeather
+{
+    public class Startup
+    {
+        public void ConfigureServices(IServiceCollection services)
+        {
+            services.AddHttpWeatherForecastService(options =>
+            {
+                options.Address = new System.Uri("https://localhost:5001/json");
+            });
+            services.AddScoped<IWeatherClassifier, WasmWeatherClassifier>();
+        }
+
+        public void Configure(IComponentsApplicationBuilder app)
+        {
+            app.AddComponent<App>("app");
+        }
+    }
+}

2019/Technical/keynote/BlazorWeather.WebAssembly/wwwroot/index.html

@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width" />
+    <title>BlazorWeather.WebAssembly</title>
+    <base href="/" />
+    <link href="_content/BlazorWeather.Core/weather.css" rel="stylesheet" />
+    <link rel="manifest" href="manifest.json">
+</head>
+<body>
+    <app>Loading...</app>
+
+    <script src="_framework/blazor.webassembly.js"></script>
+    <script>
+        if ('serviceWorker' in navigator) {
+            navigator.serviceWorker.register('service-worker.js');
+        }
+    </script>
+</body>
+</html>

2019/Technical/keynote/BlazorWeather.WebAssembly/wwwroot/manifest.json

@@ -0,0 +1,16 @@
+{
+  "short_name": "Weather",
+  "name": "Blazor Weather",
+  "icons": [
+    {
+      "src": "/icon-512.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    }
+  ],
+  "start_url": "/",
+  "background_color": "#aaaaaa",
+  "display": "standalone",
+  "scope": "/ ",
+  "theme_color": "#333333"
+}

2019/Technical/keynote/BlazorWeather.WebAssembly/wwwroot/service-worker.js

@@ -0,0 +1,8 @@
+self.addEventListener('install', async event => {
+    console.log('Installing service worker...');
+    self.skipWaiting();
+});
+
+self.addEventListener('fetch', event => {
+    return null;
+});

2019/Technical/keynote/LICENSE

@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
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+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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2019/Technical/keynote/Mobile/Weather.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");

2019/Technical/keynote/Mobile/Weather.Android/MainActivity.cs

@@ -0,0 +1,35 @@
+using System;
+
+using Android.App;
+using Android.Content.PM;
+using Android.Runtime;
+using Android.Views;
+using Android.Widget;
+using Android.OS;
+using Weather.MobileCore;
+
+namespace Weather.Droid
+{
+    [Activity(Label = "Weather", 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.SetFlags("CollectionView_Experimental");
+            global::Xamarin.Forms.FormsMaterial.Init(this, 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);
+        }
+    }
+}

2019/Technical/keynote/Mobile/Weather.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.Weather.Droid">
+    <uses-sdk android:minSdkVersion="21" android:targetSdkVersion="28" />
+    <application android:label="Weather.Droid.Android" android:networkSecurityConfig="@xml/network_security_config"></application>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+</manifest>

2019/Technical/keynote/Mobile/Weather.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("Weather.Droid.Android")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Weather.Droid.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)]

2019/Technical/keynote/Mobile/Weather.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.

2019/Technical/keynote/Mobile/Weather.Android/Resources/layout/Tabbar.xml

@@ -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" />

2019/Technical/keynote/Mobile/Weather.Android/Resources/layout/Toolbar.xml

@@ -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" />
+

2019/Technical/keynote/Mobile/Weather.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>

2019/Technical/keynote/Mobile/Weather.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>

2019/Technical/keynote/Mobile/Weather.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>

2019/Technical/keynote/Mobile/Weather.Android/Resources/values/styles.xml

@@ -0,0 +1,30 @@
+<?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 http://www.google.com/design/spec/style/color.html#color-color-palette -->
+    <!-- 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>