static void Main(string[] args)
{
Order order1 = new Order("CC", 3, "iPhone");
Order order2 = new Order("PP", 1, "iPad");
Order order3 = new Order("EE", 9, "iPhone");
OrderService service = new OrderService();
service.AddOrder(order1);
service.AddOrder(order2);
service.AddOrder(order3);
Console.WriteLine("Xml文件");
service.ExportList();
List <Order> list = new List <Order>();
list = service.ImportList();
Console.WriteLine("原先的订单");
service.DisplayOrderList();
Console.WriteLine("新的订单");
OrderService.DisplayList(list);
Console.WriteLine("iPhone");
List <Order> list2 = new List <Order>();
list2 = service.SearchOrderLinqByGood("iPhone");
OrderService.DisplayList(list2);
Console.WriteLine("Change Count of iPhone");
service.ChangeOrder(order1.ID, 30);
service.DisplayOrderList();
Console.WriteLine("Change the Price of Order1 to 9999");
service.SearchOrderByID(order1.ID).Detail[service.SearchOrderByID(order1.ID).Good, "Price"] = 9999.ToString();
service.DisplayOrderList();
Console.ReadLine();
}