Problem using LoadingPanel on button with client script

[Connie]

I have a RadGrid and a button that loads the grid based on a search string, and use the loading panel when the user hits the search button. I have a javascript function validate() on the button to validate if use enters search criteria, if I remove this javascript function from the button, the loading panel works fine. But if I add this function nothing happens when clicking search button even though the function return true.

the code is as below:

function validate() {
        if (document.getElementById("<%=txtQueryText.ClientID%>").value == "") {
            alert("Please enter search keyword!");
            document.getElementById("<%=txtQueryText.ClientID%>").focus();
            return false;
        }
        else return true;
    }


<AjaxSettings>
                <telerik:AjaxSetting AjaxControlID="BtnSearch">
                    <UpdatedControls>
                        <telerik:AjaxUpdatedControl ControlID="RadGridResults" LoadingPanelID="RadAjaxLoadingPanel1"/>
                    </UpdatedControls>
                </telerik:AjaxSetting>
            </AjaxSettings>

<asp:Button ID="btnSearch" runat="server" Text="<%$ Resources:GUI,Button.Search %>" OnClick="btnSearch_Click"  OnClientClick="return validate()" />

Does it support client script button or what could be wrong.

Please help. Thanks.

[Maria Ilieva]

Hello Connie,

I would suggest you to refer to the help topic below. It elaborates on executing custom javascript after ajax request:
http://www.telerik.com/help/aspnet-ajax/ajxcustomjavascript.html

Best wishes,
Maria Ilieva
the Telerik team