private void AddFoodOrderToBill(object sender, ExternalDataEventArgs e)
        {
            CRySTAL.FoodOrder order = (e as WorkflowLocalService.FoodOrderEventArgs).Order;
            CRySTALDataConnections.CRySTALDataSetTableAdapters.BillItemsTableAdapter bia = new CRySTALDataConnections.CRySTALDataSetTableAdapters.BillItemsTableAdapter();
            CRySTAL.CrystalMenuDataContext db = new CRySTAL.CrystalMenuDataContext();

            foreach (CRySTAL.ItemOrder item in order.FoodOrders)
            {
                var product = from p in db.MenuItems
                              where p.ID == item.productID
                              select p;
                if (product.Count() > 0)
                {
                    bia.InsertBillItem(e.InstanceId, product.First().Name, (decimal)product.First().Price, item.DeleverToPerson);
                }
            }
        }