MSBuildTreatWarningsAsErrors does not work on Visual Studio 2022-CodePudding

I want the build to fail when there's a warning. I have the following at .csproj

<PropertyGroup>
     <MSBuildTreatWarningsAsErrors>true</MSBuildTreatWarningsAsErrors>
 </PropertyGroup>

When I try to build from Build menu or Ctrl B, the build output shows an error but it succeeds:

If I build from command line with dotnet build, it fails as expected.

Environment: Visual Studio 2022 Professional, .NET 6.0

CodePudding user response：

There is an important note on the

The compiler properly highlights this warning as an error now, and includes it in the errors list:

When I perform a build, it also marks it as failed and outputs the errors:

Build started...
1>------ Build started: Project: netcoreapi, Configuration: Debug Any CPU ------
Restored C:\path\repos\netcoreapi\netcoreapi\netcoreapi.csproj (in 17 ms).
1>You are using a preview version of .NET. See: https://aka.ms/dotnet-core-preview
1>C:\path\netcoreapi\netcoreapi\Controllers\TestController.cs(14,20,14,31): error CS0219: The variable 'dummyString' is assigned but its value is never used
1>Done building project "netcoreapi.csproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

Try changing the .csproj to use <TreatWarningsAsErrors> instead for each configuration.