Dot Net Code Snippets

When i was worked with Ajax with timer Control i have the task ie: updating the some control inside the UpdatePanel ie: I am refreshing or call the method  at regular intervals. That time i got this error

 Sys.WebForms.PageRequestManagerServerErrorException ... 404 not found

This error occurs only when the page is idle for 1 min or more than 1 min, so i googled to get the solution for this issue. there is number of solution available according the problem and at which situation you are using.

< asp:ScriptManager ID="ScriptManager1" runat="server"   EnablePartialRendering="false" />