/// <summary> /// 添加飞机租赁订单行 /// </summary> /// <param name="price">单价</param> /// <param name="amount">数量</param> /// <param name="discount">折扣</param> /// <param name="delivery">预计交付日期</param> /// <returns>飞机租赁订单行</returns> public AircraftLeaseOrderLine AddNewAircraftLeaseOrderLine(decimal price, int amount, decimal discount, DateTime delivery) { var aircraftLeaseOrderLine = new AircraftLeaseOrderLine { OrderId = Id, UnitPrice = price, Amount = amount, Discount = discount, EstimateDeliveryDate = delivery }; aircraftLeaseOrderLine.GenerateNewIdentity(); OrderLines.Add(aircraftLeaseOrderLine); return aircraftLeaseOrderLine; }