SFTP Client OpenSource and DLL

You can find opensource code to for SecureFTP Server in the below said link
where the dlls can be used in .Net to access files in SecureFTP Server

http://www.tamirgal.com/blog/page/SharpSSH.aspx

Thanks to Tamir Gal

Note: In the wrapper class the rm function has to be called for remove file function in the source code and compile