Move <Nullable>enable</Nullable> to Directory.Build.props

Directory.Build.props

@@ -2,7 +2,9 @@
 <Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
 
   <PropertyGroup>
-    <LangVersion>8.0</LangVersion>
+    <LangVersion>9.0</LangVersion>
+    <Nullable>enable</Nullable>
+    <WarningsAsErrors>nullable</WarningsAsErrors>
   </PropertyGroup>
 
 

samples/XCT.Sample.Android/Xamarin.CommunityToolkit.Sample.Android.csproj

@@ -22,9 +22,6 @@
     <AndroidHttpClientHandlerType>Xamarin.Android.Net.AndroidClientHandler</AndroidHttpClientHandlerType>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

samples/XCT.Sample.GTK/Xamarin.CommunityToolkit.Sample.GTK.csproj

@@ -13,9 +13,6 @@
     <FileAlignment>512</FileAlignment>
     <Deterministic>true</Deterministic>
     <TargetFrameworkProfile />
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

samples/XCT.Sample.Tizen/Xamarin.CommunityToolkit.Sample.Tizen.csproj

@@ -3,9 +3,6 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>tizen40</TargetFramework>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>

samples/XCT.Sample.UWP/Xamarin.CommunityToolkit.Sample.UWP.csproj

@@ -18,9 +18,6 @@
     <FileAlignment>512</FileAlignment>
     <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
     <AppxPackageSigningEnabled>false</AppxPackageSigningEnabled>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
     <DebugSymbols>true</DebugSymbols>

samples/XCT.Sample.WPF/Xamarin.CommunityToolkit.Sample.WPF.csproj

@@ -16,9 +16,6 @@
     <Deterministic>true</Deterministic>
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>

samples/XCT.Sample.iOS/Xamarin.CommunityToolkit.Sample.iOS.csproj

@@ -15,9 +15,6 @@
     <MtouchEnableSGenConc>true</MtouchEnableSGenConc>
     <MtouchHttpClientHandler>NSUrlSessionHandler</MtouchHttpClientHandler>
     <ProvisioningType>automatic</ProvisioningType>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhoneSimulator' ">
     <DebugSymbols>true</DebugSymbols>

samples/XCT.Sample.sln

@@ -18,9 +18,9 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Xamarin.CommunityToolkit.Sa
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{F695F5E8-420F-475F-A4CF-F5BB3FA6E818}"
 	ProjectSection(SolutionItems) = preProject
-		.editorconfig = .editorconfig
-		Directory.Build.props = Directory.Build.props
-		Xamarin.CommunityToolkit.ruleset = Xamarin.CommunityToolkit.ruleset
+		..\.editorconfig = ..\.editorconfig
+		..\Directory.Build.props = ..\Directory.Build.props
+		..\Xamarin.CommunityToolkit.ruleset = ..\Xamarin.CommunityToolkit.ruleset
 	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Xamarin.CommunityToolkit.Sample.WPF", "XCT.Sample.WPF\Xamarin.CommunityToolkit.Sample.WPF.csproj", "{C4D6CD2D-8DF4-4D46-936C-1AB31C87B5EA}"

samples/XCT.Sample/Xamarin.CommunityToolkit.Sample.csproj

@@ -3,9 +3,6 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <ProduceReferenceAssembly>true</ProduceReferenceAssembly>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>

src/CommunityToolkit/Xamarin.CommunityToolkit/Xamarin.CommunityToolkit.csproj

@@ -32,9 +32,6 @@
     <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
     <DebugType>portable</DebugType>
     <NoWarn>SA1123</NoWarn>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)'=='Debug' ">
     <!-- Manage TargetFrameworks for development (Debug Mode) -->

src/Markup/Xamarin.CommunityToolkit.Markup/Xamarin.CommunityToolkit.Markup.csproj

@@ -32,9 +32,6 @@
     <PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance> 
     <PackageTags>xamarin,xamarin.forms,toolkit,kit,communitytoolkit,xamarincommunitytoolkit,markup,csharpformarkup,csharp,csharpmarkup</PackageTags>
     <Configurations>Debug;Release</Configurations>
-    <Nullable>enable</Nullable>
-    <WarningsAsErrors>nullable</WarningsAsErrors>
-    <LangVersion>latest</LangVersion>
   </PropertyGroup>
   <ItemGroup Condition=" $(TargetFramework.StartsWith('netstandard1.0')) ">
     <PackageReference Include="System.ValueTuple" Version="4.5.0" />