In my continued quest to use Ruby to build my .Net apps, I have been successful using Ruby’s “sh” command to call the C# compiler (csc.exe) and successfully build my assemblies. I still have not gotten it to use MSBuild, but I’ve been lazily trying to use the .csproj files generated by Visual Studio, but it doesn’t seem to work. MSBuild acts like everything worked, however no files get changed. I guess I’ll actually need to take a look at building it with MSBuild and then incorporating that back into a Rake task.