private void PopulateTDCDeliveryWarehouses(string opCo) { // Populate the delivery warehouses for TDC Shipment option ddlDeliveryWarehouse.DataSource = WarehouseController.GetTDCDeliveryWarehouseCodes(opCo); ddlDeliveryWarehouse.Items.Clear(); ddlDeliveryWarehouse.Items.Add(new ListItem("All", "-1")); ddlDeliveryWarehouse.DataBind(); }