RadPrompt with window onbeforeunload

[Sandeep]

Hello All,
I want on my page to force user to save all data before leaving page.
I have used Radprompt with window.onbeforeunload but it will give me two pop-ups one from IE and Other from RadPrompt.
I want only window from RadPrompt.
Can anybody help me for the issue.

Sample code as :

 

<script type="text/javascript"> 

 

var needToConfirm = true;

window.onbeforeunload = confirmExit;

 

function confirmExit() {

 

var ss;

 

 

if (needToConfirm)

{

ss= radalert(

 

'Save personal information', 350, 150, 'MY Message', null, null);

 

}

}

Thanks in advc.

[Marin Bratanov]

Hello Sandeep,

You cannot cancel this event with custom code, as this would allow websites to effectively prevent the user from closing his/her browser, which is not desirable.

More information on handling this event and showing such a confirmation is available in the net, for example:
http://tim.mackey.ie/HowToCancelAnOnbeforeunloadEvent.aspx
http://msdn.microsoft.com/en-us/library/ie/ms536907(v=vs.85).aspx

When this event returns a non-void value, for example a string, the user is prompted to confirm the page unload and this browser popup will always be shown even if you add some other code there (e.g. a RadConfirm/RadPrompt) and only the browser dialog will be taken into account by the browser.

Kind regards,
Marin Bratanov
the Telerik team