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OnBeforeUnload .....

Posted on 2007-03-27
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Last Modified: 2008-02-01
Hi,
I have an asp.net web page...and it has following script on the HTML <script> block
<script>
  var needToConfirm = <%= jsNeedToConfirm.ToString().ToLower() %>;
  window.onbeforeunload = confirmExit;
  function confirmExit()
    {
        if (needToConfirm )
        {
            return "Test";
        }
}
</script>
and in the code behind(im using C#) on the page_load event the variable
bool jsNeedToConfirm = true;
everything looks good till now....BUT...i have an asp.net button and in the click event of that button im setting jsNeedToConfirm = false;....now the problem im facing is that when im clicking the Save button....even before the click event is called the alert window is being popped up...and then its going to Click event of the button and setting the jsNeedToConfirm = false......can any one tell me what can be the problem or anyother suggestions.....
Prompt help on this wud be much appreciated...
Thanks
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Question by:aspnetdev
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by:
aspnetguy earned 500 total points
ID: 18800062
Without doing any testing it would seem that the code you wrote is working correctly (not necessarily how you want it to), let me explain.

When you click your form button it does a PostBack which means the page unloads and then reloads with the new data so the alert is appearing because JS is detecting the unload when you click your form button.

In your page load try setting this

btnName.Attributes.Add("onclick","needToConfirm=false;return true;");
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