or
<telerik:RadScriptManager ID="ScriptManager1" runat="server" CdnSettings-BaseUrl="~/Scripts" EnableHistory="False" EnablePageMethods="False" EnableScriptGlobalization="False" OutputCompression="AutoDetect" AsyncPostBackTimeout="900"> <Scripts> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" /> <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" /> </Scripts></telerik:RadScriptManager>CdnSettings-BaseUrl="~/Scripts" setting.

<telerik:RadComboBox ID="ddlFolders" runat="server"> <Items> <telerik:RadComboBoxItem /> </Items> <ItemTemplate > <uc1:PhotoMove ID="PhotoMove1" PhotoID='<%# ((GridItem)Container).ItemIndex.ToString() %>' runat="server" /> </ItemTemplate> </telerik:RadComboBox>'<%# ((GridItem)Container).ItemIndex.ToString() %>'