Upload to FTP Server

Hey, I am trying to upload a file to my ftp server, but I have no clue how to login, does anyone know something about that?

It depends on the method you are using to access the FTP site. Normally you pass the user name and password in the url to the upload method. The format is username:password@host

If you are using WebRequest then you can specify the credentials on the instance of the request you make.