C#设计模式之【命令模式】

using System;using System.Collections.Generic;using System.Text;namespace 命令模式{ class Program { static void Main(string[] args) { //开店前的准备 Barbecuer boy = new Barbecuer(); Command bakeMuttonCommand1 = new BakeMuttonCommand(boy); Command bakeMuttonCommand2 = new BakeMuttonCommand(boy); Command bakeChickenWingCommand1 = new BakeChickenWingCommand(boy); Waiter girl = new Waiter(); //开门营业 顾客点菜 girl.SetOrder(bakeMuttonCommand1); girl.SetOrder(bakeMuttonCommand2); girl.SetOrder(bakeChickenWingCommand1); //点菜完闭，通知厨房 girl.Notify(); Console.Read(); } } //服务员 public class Waiter { private IList<Command> orders = new List<Command>(); //设置订单 public void SetOrder(Command command) { if (command.ToString() == "命令模式.BakeChickenWingCommand") { Console.WriteLine("服务员：鸡翅没有了，请点别的烧烤。"); } else { orders.Add(command); Console.WriteLine("增加订单：" command.ToString() " 时间：" DateTime.Now.ToString()); } } //取消订单 public void CancelOrder(Command command) { orders.Remove(command); Console.WriteLine("取消订单：" command.ToString() " 时间：" DateTime.Now.ToString()); } //通知全部执行 public void Notify() { foreach (Command cmd in orders) { cmd.ExcuteCommand(); } } } //抽象命令 public abstract class Command { protected Barbecuer receiver; public Command(Barbecuer receiver) { this.receiver = receiver; } //执行命令 abstract public void ExcuteCommand(); } //烤羊肉串命令 class BakeMuttonCommand : Command { public BakeMuttonCommand(Barbecuer receiver) : base(receiver) { } public override void ExcuteCommand() { receiver.BakeMutton(); } } //烤鸡翅命令 class BakeChickenWingCommand : Command { public BakeChickenWingCommand(Barbecuer receiver) : base(receiver) { } public override void ExcuteCommand() { receiver.BakeChickenWing(); } } //烤肉串者 public class Barbecuer { public void BakeMutton() { Console.WriteLine("烤羊肉串!"); } public void BakeChickenWing() { Console.WriteLine("烤鸡翅!"); } }}