Actually assembly is the minimal unit of deployment, not compilation. The minimal unit of compilation is the netmodule[1]. You can compile from different langua

Actually assembly is the minimal unit of deployment, not compilation. The minimal unit of compilation is the netmodule[1]. You can compile from different languages as netmodules, then link the resulting netmodules together in an assembly. By the way, this is not a scenario supported by Visual Studio, so it requires using command line tools. So for any practical purpose, you're right that multi-language solution require the use of multiples assembly projects, which is tedious. [1] http://blogs.msdn.com/b/junfeng/archive/2005/02/12/371683.aspx http://blogs.msdn.com/b/junfeng/archive/2005/02/12/371683.as...