How to prevent double submit with jQuery in ASP.NET app with UpdatePanels

Question

I have an Intranet ASP.NET application which is sometimes slow to respond. My requirement is to prevent double submit, and ideally provide feedback to the user that the for

Answer 1

You place an allow/not allow to submit form base on a flag, as:

Page.Form.Attributes["onsubmit"] = "return fAllowToSubmit();";

and you open close the flag for the submit when you send via updatepanel and wait for return.

and the

.FadedDiv
{
    background-color: white;
    filter:alpha(opacity=50);
    opacity: 0.5;
    -moz-opacity:0.50;
}

Of course you have also the "please wait" message that can open automatically with the update panel.