add_close multiple times

[Jørgen]

Hi,

When opening my RadWindow I use add_close() to add a closing function it. However, it seems that executing add_close() multiple times (when opening the window several times) makes the closing function also execute multiple times. Is there a way to clear the closing functions?

Regards,
Sjur

[Georgi Tunev]

Hello Sjur,

In ASP.NET AJAX, you can use the add_eventname and remove_eventname methods to add/remove event handlers. For example:

<form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
    <script type="text/javascript">
        function openWin()
        {
            var oWnd = radopen("http://www.google.com", "RadWindow1");
            oWnd.add_close(ClosingFn);
        }

        function ClosingFn(oWnd)
        {
            alert(oWnd + " was closed");
        }

        function removeClose()
        {
            var oWnd = $find("RadWindow1");
            if(oWnd)
            {
                oWnd.remove_close(ClosingFn);
            }
            else
            {
                alert("RadWindow not found");
            }
        }

    </script>
    <telerik:RadWindowManager
        DestroyOnClose="true"
        ID="RadWindowManager1"
        runat="server">
    </telerik:RadWindowManager>
    <button onclick="openWin(); return false;">open and set</button>
    <br /><br />
    <button onclick="removeClose(); return false;">remove OnClientClose</button>
</form>

I hope this helps. More information on the subject is available in many ASP.NET AJAX resources on the Net - for example you can check this article:
http://dotnetslackers.com/articles/ajax/RaisingAndHandlingEventsWithASPNETAjax.aspx



Sincerely yours,
Georgi Tunev
the Telerik team

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[Jørgen]

Thanks, I wasn't aware of that. It worked out great.

Regards,
Sjur