code improvements

Author: w-ahmad

src/TableView.cs

@@ -1097,7 +1097,7 @@ private void OnCellSelectionChanged()
         DispatcherQueue.TryEnqueue(() =>
         {
             var oldSelection = SelectedCells;
-            SelectedCells = new HashSet<TableViewCellSlot>(SelectedCellRanges.SelectMany(x => x));
+            SelectedCells = [.. SelectedCellRanges.SelectMany(x => x)];
 
             var rowIndexes = oldSelection.Select(x => x.Row).Concat(SelectedCells.Select(x => x.Row)).Distinct();
 

src/Themes/TableViewColumnHeader.xaml

@@ -31,7 +31,7 @@
         <Setter Property="VerticalContentAlignment"
                 Value="Center" />
         <Setter Property="HorizontalContentAlignment"
-                Value="Left" />
+                Value="Stretch" />
         <Setter Property="IsTabStop"
                 Value="False" />
         <Setter Property="Background">

src/WinUI.TableView.csproj

@@ -16,10 +16,20 @@
     <DisableImplicitUnoPackages>true</DisableImplicitUnoPackages>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$([MSBuild]::GetTargetPlatformIdentifier($(TargetFramework)))' == 'windows'">
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="CommunityToolkit.WinUI.Behaviors" Version="8.1.240916" />
-    <PackageReference Condition="'$(TargetFramework)' == 'net8.0-windows10.0.22621.0'" Include="Microsoft.WindowsAppSDK" Version="1.6.250108002" />
-    <PackageReference Condition="'$(TargetFramework)' != 'net8.0-windows10.0.22621.0'" Include="Uno.WinUI" Version="5.5.95" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$([MSBuild]::GetTargetPlatformIdentifier($(TargetFramework)))' != 'windows'">
+    <PackageReference Include="Uno.WinUI" Version="5.5.95" />    
+  </ItemGroup>
+
+  <ItemGroup Condition="'$([MSBuild]::GetTargetPlatformIdentifier($(TargetFramework)))' == 'windows'">
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.6.250108002" />
   </ItemGroup>
 
   <PropertyGroup Condition="'$(Configuration)' == 'Release'">