assets/samples/Samples/GeometryAPI/BRepBuilderExample/CS/BRepBuilderExample.csproj

<Project Sdk="">
  <PropertyGroup>
    <ProductVersion>9.0.30729</ProductVersion>
    <RootNamespace>Revit.SDK.Samples.BRepBuilderExample.CS</RootNamespace>
    <UseWPF>true</UseWPF>
  </PropertyGroup>
  <Import Project="$(SolutionDir)VSProps\SDKSamples.props" />
  <ItemGroup>
    <PackageReference Include="Microsoft.CSharp" Version="4.7.0" />
  </ItemGroup>
  <Import Project="$(SolutionDir)VSProps\SDKSamples.targets" />
  <PropertyGroup>
    <PostBuildEvent>set FILEFORSAMPLEREG="$(SolutionDir)..\..\..\..\Regression\API\SDKSamples\UpdateSampleDllForRegression.py"
if exist %25FILEFORSAMPLEREG%25 py -3 %25FILEFORSAMPLEREG%25  "$(ProjectPath)" "$(TargetPath)" "$(SolutionDir)"</PostBuildEvent>
  </PropertyGroup>
</Project>