Thank you for the provided additional information.
The RadFileExplorer's ItemCommand event can be used to achieve the required functionality - you can get the name of the uploaded file from the event argument's Path property, e.g.:
sender, Telerik.Web.UI.RadFileExplorerEventArgs e)
fileName = e.Path.Substring(e.Path.LastIndexOf(
) + 1);
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