Hi,
I've developed various applications and libraries in C# using various technologies (Windows Forms, WPF, Windows Services, ASP.NET Web Applications and such).
Some of the project titles:
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XML Parser (Library)
Network Monitor (WPF)
Theme Monitor (Service and Windows Forms)
I can say I have a good grip on C#.
I can also work for you for long term (as required).
Thank you for your time,
Meet Thakar