Enable IntelliSense for XAML resources not work

Translation: error netsdk1022 Duplicate 'Page' items were included. The .NET SDK includes 'Page' items from your project directory by default .....

[ShankarBUS]

Ohhhhh… I got it

The problem is the DesignTimeResources.xaml is not a Page it is a ResourceDictionary only used by Visual Studio only during Design Time. You included it as a page and it will be compiled into the source code.

Follow these steps Step 1 : Move the DesignTimeResources.xaml file in to Properties (create one if not existing) folder (not necessary but this will prevent it from mingling with other xaml files)

Example :

Step 2 : Add this in your csproj file instead

  <ItemGroup>
    <Page Remove="Properties\DesignTimeResources.xaml" />
  </ItemGroup>

  <ItemGroup>
    <None Include="Properties\DesignTimeResources.xaml">
      <ContainsDesignTimeResources>True</ContainsDesignTimeResources>
      <SubType>Designer</SubType>
      <Generator>MSBuild:Compile</Generator>
    </None>
  </ItemGroup>

[GF-Huang]

If I add <ItemGroup> <Page>...</Page> </ItemGroup> into the *.csproj, it will cause the project building failure as above NETSDK1022 error.

If I remove the <ItemGroup> <Page>...</Page> </ItemGroup> node from *.csproj, it becomes no building errors, but when I typing <SomeElement someAttribute={StaticResource }> in VS xaml editor, it does not show any resources such as SystemControlForegroundBaseMediumBrush etc…