, pavone wrote

 It seems I'll have to rely on javascript then.. All I need is to copy from one place to the other. I could also spawn a process to robocopy from the webserver.. 

Oh are you sure you want to do that? Ideally you're running asp.net in a low priv account which can't do things like that. It would be safer to signal the transfer in some way and have a windows service listening, which has rights to transfer.