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Binding to WCF
RadDropDownList supports binding to an WCF service.
Example of binding to WCF service
ASPNET
<telerik:RadDropDownList RenderMode="Lightweight" ID="RadDropDownList1" runat="server" Skin="Default" EmptySelectionMessage="Select">
<WebServiceSettings Path="DropDownListWcfService.svc" Method="LoadData" />
</telerik:RadDropDownList>