I am using the script below and it is constantly posting back to the server requesting items. How do I make this stop??!

HTML

    <script type="text/javascript">

        function fillProducts(sender, evntArgs) {

            if (sender.get_items().get_length() == 0) {

                sender.loadItems();

            }

        }

    </script>

    <asp:ScriptManager ID="ScriptManager1" runat="server"/>

    <ig:WebDropDown ID="WebDropDown1" TextField="Product" ValueField="Product" 

        runat="server" Width="200px" 

        onitemsrequested="WebDropDown1_ItemsRequested" EnableAnimations="False" 

        EnableDropDownAsChild="False" EnableRenderingAnchors="False">

        <DropDownItemBinding TextField="Product" ValueField="Product" />

        <ClientEvents DropDownOpening="fillProducts" />

    </ig:WebDropDown>

Code Behind

    protected void WebDropDown1_ItemsRequested(object sender, Infragistics.Web.UI.ListControls.DropDownItemsRequestedEventArgs e)

    {

        SqlDataSource products = new SqlDataSource();

        products.ConnectionString = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["WebApplicationsConnectionString"].ConnectionString;

        products.SelectCommand = "SELECT DISTINCT Product FROM Quote_Price_List WHERE Type=1";

        ((Infragistics.Web.UI.ListControls.WebDropDown)sender).DataSource = products;

        ((Infragistics.Web.UI.ListControls.WebDropDown)sender).DataBind();

    }

edit:

this same thing is happening with the 10.1 release...