Sudoku.csproj

<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <UseWPF>true</UseWPF>
  </PropertyGroup>

  <ItemGroup>
    <None Remove="Icon.png" />
  </ItemGroup>

  <ItemGroup>
    <Resource Include="Icon.png" />
  </ItemGroup>

  <ItemGroup>
    <None Update="Samples\Beginner.sdk">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="Samples\Default.sdk">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="Samples\Profi.sdk">
      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
    </None>
    <None Update="Samples\Sample1.sdk">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </None>
    <None Update="Samples\Sample2.sdk">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </None>
    <None Update="Samples\Sudoku.sdk">
      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
    </None>
  </ItemGroup>

</Project>