Question

I have the following code:

<telerik:RadAjaxPanel ID="RadAjaxPanel1" runat="server" LoadingPanelID="rlpMain">
    <asp:ImageButton ID="ImageButton1" runat="server" 
        OnClientClick="return confirm('Are you sure?');" />
</telerik:RadAjaxPanel>

This code does not fire my code behind event which I have written in a .vb file.

Pls help me….

Answer 1

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 ajaxified by added the necessary AJAX setting to RadAjaxManager or 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>