Upgrade to Windows App SDK 1.8

Author: Morten Nielsen

docs/concepts/Maui.md

@@ -5,19 +5,19 @@
 Add WinUIEx to the Windows build target by adding a package reference in the `.csproj` file:
 ```xml
   <ItemGroup>
-    <PackageReference Include="WinUIEx" Version="2.3.0" Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'" />
+    <PackageReference Include="WinUIEx" Version="2.8.0" Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'" />
   </ItemGroup>
 ```
 
 If the referenced version of WinUIEx relies on a newer version of the Windows App SDK than .NET MAUI implicitly references, you'll likely see errors like this:
 ```
-Error	NU1605	Warning As Error: Detected package downgrade: Microsoft.WindowsAppSDK from 1.4.230822000 to 1.2.221209.1.
-Reference the package directly from the project to select a different version. MauiApp8 -> WinUIEx 2.3.0 -> Microsoft.WindowsAppSDK (>= 1.4.230822000) 
+Error	NU1605	Warning As Error: Detected package downgrade: Microsoft.WindowsAppSDK from 1.8.250907003 to 1.7.250310001.
+Reference the package directly from the project to select a different version. MauiApp8 -> WinUIEx 2.8.0 -> Microsoft.WindowsAppSDK (>= 1.8.250907003) 
 ```
 To address that, explicitly reference the Windows App SDK package with the version mentioned in the error. For example:
 ```xml
 <ItemGroup>
-    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.4.230822000" Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'" />
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.8.250907003" Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'" />
 </ItemGroup>
 ```
 

src/Dependencies.targets

@@ -1,8 +1,9 @@
 <Project>
 
   <PropertyGroup>
-    <WinAppSDKVersion>1.7.250310001</WinAppSDKVersion>
-    <WinAppSDKToolsVersion>10.0.26100.1</WinAppSDKToolsVersion>
+    <WinAppSDKVersion>1.8.250907003</WinAppSDKVersion>
+    <WinUIVersion>1.8.250906003</WinUIVersion>      
+    <WinAppSDKToolsVersion>10.0.26100.4654</WinAppSDKToolsVersion>      
   </PropertyGroup>
 
 </Project>

src/Directory.Build.targets

@@ -17,7 +17,7 @@
     <Authors>Morten Nielsen - https://xaml.dev</Authors>
     <Company>Morten Nielsen - https://xaml.dev</Company>
     <PackageIcon>logo.png</PackageIcon>
-    <Version>2.7.0</Version>
+    <Version>2.8.0</Version>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(PackageId)'!=''">
@@ -30,7 +30,7 @@
   </PropertyGroup>
 
   <PropertyGroup Label="PackageValidationSettings">
-    <PackageValidationBaselineVersion>2.6.0</PackageValidationBaselineVersion>
+    <PackageValidationBaselineVersion>2.7.0</PackageValidationBaselineVersion>
     <GenerateCompatibilitySuppressionFile>false</GenerateCompatibilitySuppressionFile>
   </PropertyGroup>
 

src/WinUIEx/NumberBox/NumberBox.cs

@@ -23,7 +23,7 @@ namespace WinUIEx
     /// <para><note type="caution">Note: It is recommended to NOT set <see cref="NumberBox{T}.AcceptsExpression"/> to <c>true</c>
     /// when working with Decimals, since the calculations will be performed with <c>double</c> accuracy only.</note></para>
     /// <note type="tip">
-    /// Note: To be able to assign <see cref="System.Decimal"/> values to the <see cref="NumberBoxDecimal"/> control, it can't be done in XAML (although x:Bind works). Support for decimal values is a limitation in the Windows App SDK and is currently planned to be addressed in v1.8.
+    /// Note: To be able to assign <see cref="System.Decimal"/> values to the <see cref="NumberBoxDecimal"/> control, it can't be done in XAML (although x:Bind works). Support for decimal values is a limitation in the Windows App SDK. 
     /// </note>
     /// </para>
     /// </remarks>

src/WinUIEx/WinUIEx.csproj

@@ -25,9 +25,7 @@
     <PackageId>WinUIEx</PackageId>
     <Product>WinUI Extensions</Product>
     <PackageReleaseNotes>
-      - WinUIEx now requires at least .NET 8.
-      - Added NumberBox for Decimal and Integer types, as well as a generic version for easily extensibility with any number type.
-      - Disable Tab navigation to window content container control (#226).
+      - WinUIEx now requires Windows App SDK 1.8, but no longer takes a dependency on the metapackage. Only a reference to `Microsoft.WindowsAppSDK.WinUI` is now needed.
     </PackageReleaseNotes>
   </PropertyGroup>
 
@@ -36,7 +34,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WinAppSDKVersion)" />
+    <PackageReference Include="Microsoft.WindowsAppSDK.WinUI" Version="$(WinUIVersion)" />
     <None Include="README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 

src/WinUIExMauiSample/WinUIExMauiSample.csproj

@@ -54,8 +54,7 @@
 
   <Import Project="..\Dependencies.targets" Condition="'$(WinAppSDKVersion)'==''" />
   <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'windows'">
-    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.7.250513003" />
-    <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.22621.756" />
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WinAppSDKVersion)" />
   </ItemGroup>
 
 </Project>

src/WinUIExSample/WinUIExSample.csproj

@@ -36,7 +36,7 @@
   <Import Project="..\Dependencies.targets" Condition="'$(WinAppSDKVersion)'==''" />
   <ItemGroup>
       <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
-      <PackageReference Include="Microsoft.WindowsAppSDK" Version="$(WinAppSDKVersion)" />
+      <PackageReference Include="Microsoft.WindowsAppSDK.WinUI" Version="$(WinUIVersion)" />
       <PackageReference Include="Microsoft.Windows.SDK.BuildTools" Version="$(WinAppSDKToolsVersion)" />
       <PackageReference Include="Microsoft.Windows.CsWinRT" Version="2.1.3" />
     <Manifest Include="$(ApplicationManifest)" />