Where is Visual-D C# code?

[Ramon via Digitalmars-d-ide]

I really would not recommend to use D at all for writing VS 
extensions. The thing is, are you be able to debug your D 
extension in Visual Studio experimental instance? Also Visual 
Studio is only for Windows, no need to multiplataform support, so 
just write it in C# and be ultra-productive, VS extension API is 
already cryptic enough.