.Net的委托用法

 class Program
    {
        private static byte[] result = new byte[1024];
        private static int myProt = 8885;//端口
        static Socket serverSocket;


        public delegate void Print(string str);


        public void MyPrint(string str)
        {
            Console.WriteLine(str);
        }


        public delegate void Calc(int num1, int num2);

        public void MyCalc(int num1,int num2)
        {
            Console.WriteLine("输出两个数字的计算之和：{0}",(num1+num2));
        }

        static void Main(string[] args)
        {
            Program pro = new Program();
            Print print = pro.MyPrint;
            print("dfsdf");

            Calc calc = pro.MyCalc;
            calc(3, 4);

            //int i = 0;
            //while(i>-1)
            //{
            //    Console.WriteLine("输入两个数字：");

            //    string str_num1 = Console.ReadLine();
            //    string str_num2 = Console.ReadLine();
            //    Console.WriteLine("输出两数之和："+(Convert.ToInt32(str_num1)+Convert.ToInt32(str_num2)));
            //}





            //IPAddress ip = IPAddress.Parse("127.0.0.1");
            //serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            //serverSocket.Bind(new IPEndPoint(ip, myProt));
            //serverSocket.Listen(10);
            //Console.WriteLine("启动监听{0}成功", serverSocket.LocalEndPoint.ToString());

            //Thread mythread = new Thread(ListenClient);
            //mythread.Start();
            //Console.ReadLine();


            ////服务器IP地址
            //IPAddress ip = IPAddress.Parse("127.0.0.1");
            //serverSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); ;
            //serverSocket.Bind(new IPEndPoint(ip, myProt));//绑定IP地址：端口 
            //serverSocket.Listen(10);//设定最多10个排队连接请求  
            //Console.WriteLine("启动监听{0}成功", serverSocket.LocalEndPoint.ToString());

            ////通过clientsocket发送数据
            //Thread myThread = new Thread(ListenClientConnect);
            //myThread.Start();
            //Console.ReadLine();

        }

        //监听客户端连接  
        private static void ListenClientConnect()
        {
            while (true)
            {
                Socket clientsocket = serverSocket.Accept();
                //string sendMessage = Console.ReadLine();
                //clientsocket.Send(Encoding.ASCII.GetBytes(sendMessage));
                clientsocket.Send(Encoding.ASCII.GetBytes("server say hello"));
                Thread receiveThread = new Thread(ReceiveMessage);
                receiveThread.Start(clientsocket);
            }
        }


        private static void ListenClient()
        {
            while(true)
            {
                Socket client = serverSocket.Accept();
                client.Send(Encoding.ASCII.GetBytes("Hello"));
                Thread receive = new Thread(ReceiveMessage);
            }
        }

        //接收消息
        private static void ReceiveMessage(object clientSocket)
        {
            Socket myClientSocket = (Socket)clientSocket;
            while (true)
            {
                try
                {
                    //通过clientsocket接收数据
                    int num = myClientSocket.Receive(result);
                    Console.WriteLine("接收客户端{0}消息{1}", myClientSocket.RemoteEndPoint.ToString(), Encoding.ASCII.GetString(result, 0, num));

                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                    myClientSocket.Shutdown(SocketShutdown.Both);
                    myClientSocket.Close();
                    break;
                }
            }
        }

    }

委托和接口很类似，但是委托只用于方法。