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Raising Javascript funtion on clicking of X button of Web form

I am working with web forms

ASP.Net 2.0+C#.Net

I am opening a modal dialog window from a parent page.Now when the user closes the modal dialog window by clicking on X button I want to raise a javascript function.How do I do that.I dont want to use onunload event of form...any other way?

Gyanendra Singh

use this
<BODY onbeforeunload="HandleOnClose()">

Then, add the following JavaScript code into the <HEAD> section of your ASPX page:

<script language="javascript">

</script>

Anurag Thakur

ee solution for the same
https://www.experts-exchange.com/questions/21478805/Javascript-onbeforeunload-popup-on-page-exit.html

vali66

ASKER

The modal dialog window I am using is basically used for progress bar functionality.So this form will get loaded and unloaded at each instance and obviosly I cant use onbeforeunload and onunload.

So Is there any other way of raising javascript function when the user clicks on X button??

Gyanendra Singh

as per my knowlede No other way is available

Refael Ackermann

Hello vali66,

You could use one of the before mentioned events like a dead-men-switch.
Attach your event handler code to handle "unexpected" closure of the window. When the progress bar completes normally, flag this, so the close handler will not run.

<BODY onunload="Body_OnClose()">
 
<script language="javascript">
<!--
var noramlClose = false;
function Body_OnClose()
{
  if (normalClose)
    return;
 
  alert("Unexpected closing");
}
 
//-->
</script>

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vali66

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