Updated to follow new sample page guidelines

Author: yoshiask

Microsoft.Toolkit.Uwp.SampleApp/Microsoft.Toolkit.Uwp.SampleApp.csproj

@@ -498,9 +498,6 @@
     <Compile Include="SamplePages\FocusBehavior\FocusBehaviorPage.xaml.cs">
       <DependentUpon>FocusBehaviorPage.xaml</DependentUpon>
     </Compile>
-    <Compile Include="SamplePages\TabbedCommandBar\TabbedCommandBarPage.xaml.cs">
-      <DependentUpon>TabbedCommandBarPage.xaml</DependentUpon>
-    </Compile>
     <Compile Include="SamplePages\TilesBrush\TilesBrushPage.xaml.cs">
       <DependentUpon>TilesBrushPage.xaml</DependentUpon>
     </Compile>
@@ -982,10 +979,6 @@
     <Content Include="SamplePages\TabbedCommandBar\TabbedCommandBar.bind">
       <SubType>Designer</SubType>
     </Content>
-    <Page Include="SamplePages\TabbedCommandBar\TabbedCommandBarPage.xaml">
-      <SubType>Designer</SubType>
-      <Generator>MSBuild:Compile</Generator>
-    </Page>
     <Page Include="SamplePages\TilesBrush\TilesBrushPage.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/TabbedCommandBar/TabbedCommandBarPage.xaml

@@ -456,11 +456,10 @@
       },
       {
         "Name": "TabbedCommandBar",
-        "Type": "TabbedCommandBarPage",
         "Subcategory": "Layout",
         "About": "A control for displaying multiple CommandBars in the same space, like Microsoft Office's ribbon.",
         "CodeUrl": "https://github.com/windows-toolkit/WindowsCommunityToolkit/tree/master/Microsoft.Toolkit.Uwp.UI.Controls/TabbedCommandBar",
-        "XamlCodeFile": "TabbedCommandBar.bind",
+        "XamlCodeFile": "/SamplePages/TabbedCommandBar/TabbedCommandBar.bind",
         "Icon": "/SamplePages/TabbedCommandBar/TabbedCommandBar.png",
         "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/controls/TabbedCommandBar.md"
       }

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/TabbedCommandBar/TabbedCommandBarPage.xaml.cs

@@ -93,6 +93,8 @@ private void SelectedItemVisibilityChanged(DependencyObject sender, DependencyPr
             // If the item is not visible, default to the first tab
             if (sender.GetValue(dp) is Visibility vis && vis == Visibility.Collapsed)
             {
+                // FIXME: This will cause WinUI to throw an exception if run
+                // when the tabs overflow
                 SelectedItem = MenuItems.FirstOrDefault();
             }
         }

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -2,7 +2,7 @@
                     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                     xmlns:controls="using:Microsoft.Toolkit.Uwp.UI.Controls">
 
-    <SolidColorBrush x:Key="ContextualTabBackground" Color="{StaticResource SystemAltMediumColor}"/>
+    <SolidColorBrush x:Key="ContextualTabBackground" Color="{ThemeResource SystemAltMediumColor}"/>
 
     <Style BasedOn="{StaticResource DefaultTabbedCommandBarItemStyle}" TargetType="controls:TabbedCommandBarItem"/>