I am using the Telerik Ajax controls in a Single Page App type scenario. I use the client side API of the Telerik controls combined with web service calls when I need to communicate with the server. I can't post back the page as it is currently implemented or I will have all kinds of lost client state issues to contend with. However, I need to be able to upload single files from the client to the server through this SPA page. Can the AsycnUpload control support such a scenario? It seems that all of the demos demonstrate the need to post back the page. I guess I could open a secondary page in a popup RandWindow and have this window do the uploading, but this is not very seamless. -Thanks for your thoughts.