Java or C# communicate with arduino

Hello everyone I need help

i want to do one application
for ex: I want to prepare a GUI in java or C# and after that to send to arduino
can somebody help me about that

I have a C# application that you could use as a starting point. PM me if you want a copy. Include an e-mail address.

Hello PaulS

I am doing an application in C # can be given the code I would appreciate a lot ...

my mail is [email protected]
Thank PaulS

Sent. I'd strongly encourage you to modify your post to remove your email address.