Sys.Extended is undefined (AjaxControlToolkit asp.net)
Tuesday, November 5, 2013 Category : ASP.NET 2
if u get this type 'Sys.Extended is undefined ' error in asp.net AjaxControlToolkit latest version on (4.1.7.1005)
use Ajaxtoolkit script manager not <asp:ScriptManager>
<ajaxToolkit:ToolkitScriptManager EnablePartialRendering="true" runat="Server" ID="ScriptManager1" />
