static void Main(string[] args)
{
OrderService orderService = new OrderService();
Console.WriteLine("请输入用户姓名：");
string name = Console.ReadLine();
Client client = new Client(name);
bool again = true;
while (again)
{
Console.WriteLine("选择所用功能");
Console.WriteLine("1.添加订单");
Console.WriteLine("2.删除订单");
Console.WriteLine("3.修改订单");
Console.WriteLine("4.查询订单");
Console.WriteLine("5.退出");
string a = Console.ReadLine();
switch (a)
{
case "1":
Console.WriteLine("请输入订单id：");
string id1 = Console.ReadLine();
Order order = new Order(id1, client);
order.AddOrderDetail();
orderService.AddOrder(order);
break;
case "2":
Console.WriteLine("请输入订单id：");
string id2 = Console.ReadLine();
orderService.DeleteOrder(id2);
break;
case "3":
Console.WriteLine("请输入订单id：");
string id3 = Console.ReadLine();
orderService.ChangeOrder(id3);
break;
case "4":
Console.WriteLine("请输入订单id：");
string id4 = Console.ReadLine();
orderService.SeletOrder(id4);
break;
case "5":
again = false;
break;
default:
Console.WriteLine("无效的输入. 请选择1-5的数字");
break;
}
}
}