OnClientClickevent and AJAX is not working for telerik RadControls.

Client Confirmation and AJAX in RadControls for asp.net (telerik).

One may need to provide a confirmation dialog to the users and initiate an AJAX request if accepted. Confirmation using standard post backs often looks like this:

<asp:ImageButton ID="ImageButton1" runat="server" OnClientClick="return confirm('Are you sure?');" />

The OnClientClick should be changed a bit to work with AJAX:

<asp:ImageButton ID="ImageButton2" runat="server" OnClientClick="if (!confirm('Are you sure?')) return false;" />

When the button is placed within RadAjaxPanel control.

Alternatively, the OnRequestStart client-side event could be used to implement more complex logic.
 Here is a sample script:

<telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
<script type="text/javascript">
    function OnRequestStart(ajaxControl, eventArgs) {
        var eventTarget = eventArgs.get_eventTarget();
        if (eventTarget == "<%= ImageButton1.UniqueID %>") {
            return confirm('Are you sure?');
        }
        else {
            return false;
        }
    }
</script>
</telerik:RadCodeBlock>

I hope you enjoyed this article, and it made your life a little bit easier.

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