I am trying to retrieve an image from the users clipboard and save it to a file on the server. I copy an mschart to the clipboard using chart.editcopy and I know that it exists within the clients clipboard.
You can't use server side code to do it. You keep comeing in here asking how to do stuff with the client server side, but its not possible. A server side script cannot deal with the client like that because the server side script is actually run by the server, hence the name. Its like a script running on a server cant execute programs on the clients box. A client side script cannot execute programs on the server. There is a gap, and if there were not it would be a massive security problem.