http://bugs.winehq.org/show_bug.cgi?id=31130
--- Comment #4 from Anastasius Focht focht@gmx.net 2012-07-05 16:47:11 CDT --- Hello Austin,
the C# compiler is distributed with standard .NET Frameworks (2.0, 3.x, 4.x). This bug is not about .NET Framework SDK (which requires .NET Framework prerequisite).
Regards