Running a task after clean only if it's not a rebuild

[lawrence-laz]

I have a solution with common output directory. Inside this solution I have the following task in the main startup .csproj file:

<Target Name="FullClean" AfterTargets="Clean">
  <RemoveDir Directories="$(OutDir);" />
</Target>

This allows to fully clean the output directory when running "Clean" via Visual Studio.
However, this breaks the "Rebuild" option in Visual Studio, as the directory gets cleaned in the middle of a rebuild.

What I want is to be able to run the <RemoveDir> task only when "Clean" is invoked, but not when "Rebuild".
I was looking for something like Condition="'$(IsRebuild)' != 'true'", but couldn't find anything.

Is this possible, and if so, how?

[benvillalobos]

Rebuild depends on these targets

msbuild/src/Tasks/Microsoft.Common.CurrentVersion.targets

Lines 956 to 961 in ce75232

	<RebuildDependsOn>
	BeforeRebuild;
	Clean;
	$(_ProjectDefaultTargets);
	AfterRebuild;
	</RebuildDependsOn>

What you can do is hook into BeforeRebuild and set SomeProperty to true. Then condition your FullClean target to run only if that property is false.