Page unload event
From: Weston Weems (anonymous_at_discussions.microsoft.com)
Date: 11/17/04
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Date: Wed, 17 Nov 2004 13:07:14 -0800
I too have this requirement, I've been able to use both
onUnLoad, and onBeforeUnload() to catch the request to
leave the page, however I havent been able to distinguish
between page reload/postback and going away from the page.
I figured if there was a way I could know what the new url
was, I'd be ok, but doesnt seem that information is
avaliable at the time hte unload event is fired off.
If you find any more information on this... please do post
it here.
Thanks
Weston Weems
>-----Original Message-----
>I have a web form in my application that will be used for
both viewing and
>updating information. I have a requirement that if any
data has been changed
>on the page and the user attempts to leave the page
without saving, the user
>gets prompted with a message asking if they want to save
changes.
>
>It seemed logical to put any code to handle this in the
page unload event,
>however the page unload event gets fired every time the
page does a post
>back, like when the user changes a value in a dropdown
list for example.
>
>I attempted to check for IsPostBack, before displaying
the save message. But
>in that case the save message never gets displayed, even
when leaving the
>page completely.
>
>Does anyone have any idea how to tackle this problem, or
is this an
>impossible requirement?
>.
>
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