Would you please elaborate a little bit the scenario you are trying to achieve because it is not very clear from the current explanation?
Meanwhile you can also consider RadAsyncUpload control that may fit better to your scenario.
All the best,
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their blog feed