AntTask is a project mainly written in C#, it's free.
Ant task for MSBuild. Original code: http://labs.teamprise.com/build/extensions.html
Ant task for MSBuild.
Original code: http://labs.teamprise.com/build/extensions.html
How to use:
<Ant BuildFile="$(MSBuildProjectDirectory)YourJavaProjectuild.xml" Target="jar" AntHome="$(AntHome)" JavaHome="$(JavaHome)" />