What application language does visual basics-Windows form application use?

[Kevin Usher]

I know c sharp but i dont know like what application it uses. Like how do you make stuff click other things. Or how do you make something type like in the email box and password for facebook. Please tell me the application language it uses.

[Deus ex machina]

If your question is how you can make an application interact with another application, for example by putting text in a browser text box, then you can do that programmatically from any language that can call the Windows API, like C#.
Here is one example on how to do it.
http://social.msdn.microsoft.com/forums/...e43521169/

Note, manipulating other aplications is pretty advanced stuff, this is not for beginners.