Chandrashekar
5/14/2015 - 3:04 PM

From http://www.telerik.com/support/kb/aspnet-ajax/window/details/calling-radalert-from-codebehind-(all-versions-of-radwindow)

 string radalertscript = "<script language='javascript'>function f(){radalert('" + combinedMessage.ToString() + "', 330, 210); Sys.Application.remove_load(f);}; Sys.Application.add_load(f);</script>";
                    Page.ClientScript.RegisterStartupScript(this.GetType(), "radalert", radalertscript);