Tetris/Tetris.csproj

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

    <PropertyGroup>
        <OutputType>WinExe</OutputType>
        <Nullable>enable</Nullable>
        <UseWPF>true</UseWPF>
        <TargetFramework>net6.0-windows</TargetFramework>
        <ApplicationIcon>Resources\icon.ico</ApplicationIcon>
    </PropertyGroup>

    <ItemGroup>
        <None Remove="Resources\tetris.png"/>
        <Resource Include="Resources\tetris.png">
            <CopyToOutputDirectory>Always</CopyToOutputDirectory>
        </Resource>
    </ItemGroup>

</Project>