how can i refresh/update the tree view example:
http://demos.telerik.com/aspnet-ajax/treeview/examples/applicationscenarios/directorystructure/defaultcs.aspx
Try to call the function "BindTreeToDirectory(rootFolder, rootNode);" (code from the online demo you provided" in the Upload button click as show below to refresh the treeview after uploading the files.
protectedvoid UpLoadButtonClick(object sender, EventArgs e)
{
//Write the code to upload the file here