C# 事件 订阅与发布

//服务器
public class Server
{
//服务器发布的事件
public event Action<string> MyEvent;
public void Send(string msg)
{
if (MyEvent != null)
{
Console.WriteLine("Server推送消息：" + msg);
MyEvent(msg);
}
}
}

//客户端
public class Client
{
public Client(Server s)
{
//客户端订阅
s.MyEvent += Receive;
}

public void Receive(string msg)
{
Console.WriteLine("Client收到了通知：" + msg);
}
}

调用：

static void Main()
{
Server s = new Server();
Client c = new Client(s);
s.Send("Hello");

Console.ReadKey();
}