前言
中介者模式：是两者之间通过第三者来帮助传话。
代码
//抽象接收者public abstract class Receiver{protected Mediator mediator;protected Receiver(Mediator mediator){this.mediator = mediator;}public abstract void SendMessage(string message);public abstract void ReceiveMessage(string message);}//具体接收者Apublic class ReceiverA : Receiver{public ReceiverA(Mediator mediator) : base(mediator){}public override void ReceiveMessage(string message){Console.WriteLine($"{this.GetType().Name} got a message[{message}]");}public override void SendMessage(string message){Console.WriteLine($"{this.GetType().Name}:a message was send...");mediator.SendMessage(this,message);}}//具体接收者Bpublic class ReceiverB : Receiver{public ReceiverB(Mediator mediator) : base(mediator) { }public override void ReceiveMessage(string message){Console.WriteLine($"{this.GetType().Name} got a message[{message}]");}public override void SendMessage(string message){Console.WriteLine($"{this.GetType().Name}:a message was send...");mediator.SendMessage(this, message);}}//中介接口public interface Mediator{void SendMessage(Receiver obj, string message);}//具体中介者类public class ReceiveMediator : Mediator{private Receiver receiverA;private Receiver receiverB;public void SetReceiveA(Receiver receiverA){this.receiverA = receiverA;}public void SetReceiveB(Receiver receiverB){this.receiverB = receiverB;}public void SendMessage(Receiver receiver, string message){if(receiver == receiverA){receiverB.ReceiveMessage(message);}else if(receiver == receiverB){receiverA.ReceiveMessage(message);}}}/** 行为型模式：Behavioral Pattern* 中介者模式：Mediator Pattern*/internal class Program{static void Main(string[] args){ReceiveMediator receiveMediator = new ReceiveMediator();ReceiverA receiverA = new ReceiverA(receiveMediator);ReceiverB receiverB = new ReceiverB(receiveMediator);receiveMediator.SetReceiveA(receiverA);receiveMediator.SetReceiveB(receiverB);receiveMediator.SendMessage(receiverA, "Hello receiverB");receiveMediator.SendMessage(receiverB, "Hello receiverA");Console.ReadLine();}}
运行结果
