public static bool UpdatePrepayIdById(string prepayId, decimal orderId) { if (string.IsNullOrWhiteSpace(prepayId)) { throw new ArgumentNullException("prepayId"); } if (orderId <= 0) { throw new ArgumentNullException("orderId"); } IOnlineOrder factory = OnlineOrderFactory.GetFactory(); return(factory.UpdatePrepayIdById(prepayId, orderId)); }