Visual Studio 2010 keeps defaulting to VB.NET projects instead of C#, I imported my saved settings from 2008 which defaulted to C# projects which did not resolve the problem..
I always accidentally create VB.NET projects then slap myself in the face as I then proceed to delete the project and recreate a C# version of it.
Tools -> Import and Export Settings -> Import Selected Environment Settings... -> Make selection whether to save current settings -> Select C# under the default setting folder