static void Main(string[] args) { List <OrderDetail> orderDetails1 = new List <OrderDetail>(); orderDetails1.Add(new OrderDetail(new Good("book", 12), 3)); orderDetails1.Add(new OrderDetail(new Good("Costa", 17), 5)); orderDetails1.Add(new OrderDetail(new Good("Costa", 17), 2)); Order order1 = new Order(orderNumber: 1, address: "WHU", time: new DateTime(2021, 3, 21, 12, 12, 6), "XBC", "DL", orderDetails1); List <OrderDetail> orderDetails2 = new List <OrderDetail>(); orderDetails2.Add(new OrderDetail(new Good("mat", 12.5), 3)); orderDetails2.Add(new OrderDetail(new Good("toothbrush", 5), 2)); orderDetails2.Add(new OrderDetail(new Good("matchstick", 0.1), 50)); Order order2 = new Order(orderNumber: 5, address: "WHU", time: new DateTime(2020, 3, 22, 13, 11, 7), "LBW", "NB", orderDetails2); List <OrderDetail> orderDetails3 = new List <OrderDetail>(); orderDetails3.Add(new OrderDetail(new Good("computer", 11999), 1)); orderDetails3.Add(new OrderDetail(new Good("mouse", 88), 1)); orderDetails3.Add(new OrderDetail(new Good("mat", 15.3), 2)); Order order3 = new Order(orderNumber: 3, address: "THU", time: new DateTime(2021, 3, 21, 11, 12, 6), "XBC", "DL", orderDetails3); List <OrderDetail> orderDetails4 = new List <OrderDetail>(); orderDetails4.Add(new OrderDetail(new Good("facial cleanser", 33), 2)); orderDetails4.Add(new OrderDetail(new Good("shower", 37), 1)); orderDetails4.Add(new OrderDetail(new Good("mat", 16.2), 8)); Order order4 = new Order(orderNumber: 2, address: "SJTU", time: new DateTime(2019, 3, 21, 3, 51, 6), "YSW", "NB", orderDetails4); List <OrderDetail> orderDetails5 = new List <OrderDetail>(); orderDetails5.Add(new OrderDetail(new Good("knife", 50), 2)); orderDetails5.Add(new OrderDetail(new Good("sword", 77), 1)); orderDetails5.Add(new OrderDetail(new Good("shield", 199), 1)); Order order5 = new Order(orderNumber: 4, address: "FDU", time: new DateTime(2019, 11, 13, 2, 31, 6), "RSC", "DL", orderDetails5); OrderService service = new OrderService(); // 添加 service.Add(order1); service.Add(order2); service.Add(order3); service.Add(order4); service.Add(order5); service.Display(); // 删除 var t = service.Delete(1); Console.WriteLine(t); // Console.WriteLine("删除的对象:\n" + t); Console.WriteLine("现在剩下的所有订单:"); service.Display(); Console.WriteLine("========================================"); // 修改 List <OrderDetail> orderDetails_ = new List <OrderDetail>(); orderDetails_.Add(new OrderDetail(new Good("book", 12), 3)); orderDetails_.Add(new OrderDetail(new Good("Costa", 17), 5)); orderDetails_.Add(new OrderDetail(new Good("StarBucks", 37), 2)); Order newOrder = new Order(orderNumber: 2, address: "WHU", time: new DateTime(2021, 3, 21, 12, 12, 6), "XBC", "DL", orderDetails_); Order oldOrder = service.Modify(2, newOrder); Console.WriteLine("修改前的订单:"); Console.WriteLine(oldOrder); Console.WriteLine("修改后的订单:"); Console.WriteLine(service.SearchByNumber(2)); Console.WriteLine("========================================"); // 查询 List <Order> orderByClient = service.SearchByClient("XBC"); foreach (Order order in orderByClient) { Console.WriteLine(order); } Console.WriteLine("-----------------"); List <Order> orderByGood = service.SearchByGood("mat"); foreach (Order order in orderByGood) { Console.WriteLine(order); } Console.WriteLine("========================================"); // 排序 Console.WriteLine("按订单号降序排序:"); service.Sort(OrderService.SortMethod.Descending); service.Display(); Console.WriteLine("按总金额排序:"); service.Sort((order1, order2) => { double temp = order1.totalPrice - order2.totalPrice; return(temp < 0? -1: temp > 0?1:0); }); service.Display(); }