AJAX Update Panel Timeout Issue

I have an asp.net page where the page will query the report from the database. To query the report itself might cause timeout exception on the page itself before the report result is being returned from database.

You need to do it in two steps, first you need to override the script timeout only for the pageitself. put this code in your code behind

    Dim pageTimeOut As Integer
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
        pageTimeOut = Server.ScriptTimeout

        'this is in seconds
        Server.ScriptTimeout = 2500
End Sub

Protected Sub Page_Unload(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Unload

Server.ScriptTimeout = pageTimeOut

End Sub

The next step is required only if you use AJAX Update panel. Put this script on the aspx page

   Sys.WebForms.PageRequestManager.getInstance().add_endRequest(
        function (sender, args)
        {
             if (args.get_error() && args.get_error().name == 'Sys.WebForms.PageRequestManagerTimeoutException')
            {
                  // remember to set errorHandled = true to keep from getting a popup from the AJAX library itself
                 args.set_errorHandled(true);
             }
        });