public void SetOrder(Command command)
{
//if (command is BakeLampCommand)
//{
// Console.WriteLine("没羊排了");
//}
//else
//{
orders.Add(command);
Console.WriteLine("增加订单：" + command.ToString() + " 时间：" + DateTime.Now.ToString());
//}
}
public void CancelOrder(Command command)
{
orders.Remove(command);
Console.WriteLine("取消订单：" + command.ToString() + " 时间：" + DateTime.Now.ToString());
}