DropDownList Value returned 'Undefined'

[Khem]

Hi,
While retrieving the value of dropdownlist I am getting 'undefined'. here is my code: 

 @(Html.Telerik().DropDownList()
          .Name("cmbInvoieNo")
          .BindTo(new SelectList(Model.PIModel, "InvoiceID", "InvoiceName"))
                   .Placeholder("Select Invoice Number...")
                   .HtmlAttributes(new { style = "width: 230px; float: left;" })
                                    ) 
 <div><button type="submit" class="t-button t-state-default" onclick="getInvoiceNo()"> @Model.ButtonCaption</button> </div>
----------------------------------------------------------------------------------------------
@{
    <script type="text/javascript">
              function getInvoiceNo() {
            var cmbInvoice = $("#cmbInvoieNo").data("tDropDownList").text();            
            alert(" Invoice1 : " + cmbInvoice);
        }      
   </script>
}

--- On Click of 'Submit' button : $("#cmbInvoieNo").data("tDropDownList").text() return 'undefined' 
$("#cmbInvoieNo") ---  'defined'
$("#cmbInvoieNo").data("tDropDownList") ------- undefined

any Idea what could be wrong ??

[Khem]

I just closed my solution and restarted VS, and It got resolved ..may be some caching issue... not sure..... but now its working fine.

Thanks
Khem