show confirm window onbeforeunload

[Fakhrul]

Hi, how can i show confirm window  onbeforeunload? its because if user made any changes and didn't save and try to close the window, I need to show a confirm message window to notify the user. i have gone through some post regarding this, but couldnt find any particular solution. how can i do this? any sample code?

Thanks in advance

Mamun

[Shinu]

Hi Fakhrul,

Try adding the following client side code and see whether its working.

JavaScript:

<script type="text/javascript">
Telerik.Web.UI.RadWindow.prototype.oldClose = Telerik.Web.UI.RadWindow.prototype.close;
Telerik.Web.UI.RadWindow.prototype.close = function(arg)
{
    if (this.get_name() == "RadWindow1")
    {
        var result = confirm("Are you sure you want to close RadWindow1");
        if (result) this.oldClose(arg);
    }
    else
    {
        this.oldClose(arg);
    }
}
</script>

ASPX:

<telerik:RadWindowManager ID="RadWindowManager1" runat="server">
    <Windows>
        <telerik:RadWindow ID="RadWindow1" runat="server" Behavior="Default" InitialBehavior="None" Left="" NavigateUrl="http://www.telerik.com" OpenerElementID="btnTelerik">
        </telerik:RadWindow>
    </Windows>
</telerik:RadWindowManager>
<asp:Button ID="btnTelerik" runat="server" Text="Telerik" />

Thanks,
Shinu.

[Fakhrul]

Thanks for your reply.
Sorry its doesnt work.

window isnt radwindow. its a simple aspx page and it doesn't open with radwindow. In this case how can i do this.?

[Fakhrul]

Is there no way to show radconfirm when user click on "X" of a aspx window?

Note: This window does not open with rad window. from this window several rand window open and this window contains scriptmanager and a radwindowanager.

Thanks

Mamun

[Fakhrul]

No solution or no Suggestions?

[Georgi Tunev]

Hi Fakhrul,

Using radconfirm in onbeforeunload is not possible because radconfirm cannot block the execution thread. For such scenario we recommend to use the standard confirm dialog.


Sincerely yours,
Georgi Tunev
the Telerik team

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[Princy]

Hello Fakhrul,

You can try out the following code snippet for showing standard confirm dialog when closing the page.

[javascript]

<script type="text/javascript">
  window.onbeforeunload = function (event) {
  var message = 'All changes will get lost!';
  if (typeof event == 'undefined') {
    event = window.event;
  }
  if (event) {
    event.returnValue = message;
  }
  return message;
}
</script>

Thanks,
Princy.