public void SetOrder(Command2 command)
{
if (command.ToString() == "DesignPatternTest.Common.BakeChickenWingCommand")
{
Console.WriteLine("服務生:雞翅沒了，請換別的燒烤。");
}
else
{
orders.Add(command);
Console.WriteLine("增加訂單:" + command.ToString()
+ " 時間：" + DateTime.Now.ToString());
}
}
public void CancelOrder(Command2 command)
{
orders.Remove(command);
Console.WriteLine("取消訂單:" + command.ToString()
+ " 時間：" + DateTime.Now.ToString());
}