RadControls for ASP.NET AJAX A brief description of the AJAX controls follows:
RadAjaxManager
RadAjaxPanel
The Panel control mimics the behavior of ASP:UpdatePanel control - all the postbacking controls surrounded within start performing AJAX updates. Read more about the RadAjaxPanel here.
RadAjaxManagerProxy
RadAjaxLoadingPanel
The LoadingPanel is displayed over or above the updated controls during AJAX updates. Read how to use and configure the LoadingPanel control here.