How to change verbosity of the MSBuild task?

Question

I\'d like to have a different verbosity for the msbuild project invoked from the commandline, and those invoked by the MSBuild task from within the project. For example:

Answer 1

You have two options (at least) :)

1. Create one additional msbuild script for building abc projects "BuildABC.proj"

       <Target Name="BuildABC">
         <MSBuild Projects="a.csproj;b.csproj;c.csproj" BuildInParallel="true"/>
       </Target>
   

   In your parent script execute MSBuild using Exec task and call "BuildABC.proj" with minimal verbosity

       <Target Name=Foo>
         <Exec Command="msbuild /v:m /m:2 BuildABC.proj"/>
       </Target>
   

   You have to pass explicitly all parent properties needed in the BuildABC project to msbuild /p parameter.

2. Use custom logger. See this how to do it. In this case you can use your original script:

   <Target Name=Foo>
     <MSBuild Projects="a.csproj;b.csproj;c.csproj"/>
   </Target>
   

   In your custom logger do not log anything related to e.g. "a.csproj" project between ProjectStarted and ProjectFinished events where e.ProjectFile == "a.csproj" (to disable diagnostic logging on "a.csproj" project while building parent project with diagnostic verbosity)