命令模式(Command)

示例代码

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;

namespace命令模式
{
classProgram
{
staticvoidMain(string[]args)
{
Receiverr=newReceiver();
Commandc=newConcreteCommand(r);
Invokeri=newInvoker();

//Setandexecutecommand
i.SetCommand(c);
i.ExecuteCommand();

Console.Read();

}
}

abstractclassCommand
{
protectedReceiverreceiver;

publicCommand(Receiverreceiver)
{
this.receiver=receiver;
}

abstractpublicvoidExecute();
}

classConcreteCommand:Command
{
publicConcreteCommand(Receiverreceiver):base(receiver){}

publicoverridevoidExecute()
{
receiver.Action();
}
}

classReceiver
{
publicvoidAction()
{
Console.WriteLine("执行请求！");
}
}

classInvoker
{
privateCommandcommand;

publicvoidSetCommand(Commandcommand)
{
this.command=command;
}

publicvoidExecuteCommand()
{
command.Execute();
}
}

}

羊肉串第三版

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Text;

namespace命令模式
{
classProgram
{
staticvoidMain(string[]args)
{
//开店前的准备
Barbecuerboy=newBarbecuer();
CommandbakeMuttonCommand1=newBakeMuttonCommand(boy);
CommandbakeMuttonCommand2=newBakeMuttonCommand(boy);
CommandbakeChickenWingCommand1=newBakeChickenWingCommand(boy);
Waitergirl=newWaiter();

//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
publicclassWaiter
{
privateIList<Command>orders=newList<Command>();

//设置订单
publicvoidSetOrder(Commandcommand)
{
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
publicvoidCancelOrder(Commandcommand)
{
orders.Remove(command);
Console.WriteLine("取消订单："+command.ToString()+"时间："+DateTime.Now.ToString());
}

//通知全部执行
publicvoidNotify()
{
foreach(Commandcmdinorders)
{
cmd.ExcuteCommand();
}
}
}

//抽象命令
publicabstractclassCommand
{
protectedBarbecuerreceiver;

publicCommand(Barbecuerreceiver)
{
this.receiver=receiver;
}

//执行命令
abstractpublicvoidExcuteCommand();
}

//烤羊肉串命令
classBakeMuttonCommand:Command
{
publicBakeMuttonCommand(Barbecuerreceiver)
:base(receiver)
{}

publicoverridevoidExcuteCommand()
{
receiver.BakeMutton();
}
}

//烤鸡翅命令
classBakeChickenWingCommand:Command
{
publicBakeChickenWingCommand(Barbecuerreceiver)
:base(receiver)
{}

publicoverridevoidExcuteCommand()
{
receiver.BakeChickenWing();
}
}

//烤肉串者
publicclassBarbecuer
{
publicvoidBakeMutton()
{
Console.WriteLine("烤羊肉串!");
}

publicvoidBakeChickenWing()
{
Console.WriteLine("烤鸡翅!");
}
}

}