I have an asp:UpdateProgress associated with an asp:UpdatePanel.

Sometimes, the UpdateProgress control does activate.

How do I activate it myself through code?

Thank you

See this post http://forums.asp.net/t/1141653.aspx

-Damien

Hi,

Try this: 

prm.add_initializeRequest(InitializeRequest);
prm.add_endRequest(EndRequest);
var postBackElement;
function InitializeRequest(sender, args) {
    if (prm.get_isInAsyncPostBack()) {
        args.set_cancel(true);
    }
    postBackElement = args.get_postBackElement();
    if (postBackElement.id == 'Panel1Trigger') {
        $get('UpdateProgress1').style.display = 'block';               
    }
}
function EndRequest(sender, args) {
    if (postBackElement.id == 'Panel1Trigger') {
        $get('UpdateProgress1').style.display = 'none';
    }
}

See the online documentation

http://asp.net/ajax/documentation/live/tutorials/ProgrammingUpdateProgress.aspx

Best Regards