C# is my favorite application-development programming language (thus, the one I've been using the most, after C/C++).
Many of my projects required C# development and I love doing it - on that note, feel free to visit my profile page.
Cheers,
Cornelius
EDIT: a question though - do you want a Windows-forms application or a web-application (ASP.NET)? I can do both, but the delivery time might vary between the two