命令模式

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;



namespace CommandSchema

{

class Program

{

static void Main(string[] args)

{

Barbecue boy=new Barbecue();



Command bakeMuttonCommand=new BakeMuttonCommand(boy);

Command bakeChickenWingCommand=new BakeChickenWingCommand(boy);



Waiter gril=new Waiter();

gril.SetOrder(bakeMuttonCommand);

gril.SetOrder(bakeChickenWingCommand);



gril.Notify();

Console.ReadLine();

}

}

/// <summary>

/// 烤羊肉串的人

/// </summary>

class Barbecue

{

public void BakeMutton()

{

Console.WriteLine("开始烤羊肉串");

}

public void BakeChickenWing()

{

Console.WriteLine("开始烤鸡翅膀");

}

}

/// <summary>

/// 抽象命令

/// </summary>

abstract class Command

{

protected Barbecue receiver;



protected Command(Barbecue receiver)

{

this.receiver = receiver;

}



abstract public void ExecuteCommand();

}



class BakeMuttonCommand:Command

{

public BakeMuttonCommand(Barbecue receiver) : base(receiver)

{

}



public override void ExecuteCommand()

{

receiver.BakeMutton();

}

}



class BakeChickenWingCommand:Command

{

public BakeChickenWingCommand(Barbecue receiver) : base(receiver)

{

}



public override void ExecuteCommand()

{

receiver.BakeChickenWing();

}

}

/// <summary>

/// invoker

/// </summary>

class Waiter

{

private IList<Command> orders=new List<Command>();



public void SetOrder(Command command)

{

orders.Add(command);

Console.WriteLine("增加订单：" + command + " 时间：" + DateTime.Now);

}



public void CancelOrder(Command command)

{

orders.Remove(command);

Console.WriteLine("取消订单：" + command + " 时间：" + DateTime.Now);

}



public void Notify()

{

foreach (Command command in orders)

{

command.ExecuteCommand();

}

}

}

}