C# 简单的聊天通信

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服务器：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Net;using System.Net.Sockets;using System.Threading;namespace Servers{    public partial class Server : Form    {        public Server()        {            InitializeComponent();            //关闭对文本框的非法线程操作检查            TextBox.CheckForIllegalCrossThreadCalls = false;//还未懂！        }        private void Form1_Load(object sender, EventArgs e)        {        }        Thread threadWatch = null;        Socket socketWatch = null;        private void Serverconn_Click(object sender, EventArgs e)        {            socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            IPAddress ip = IPAddress.Parse(txtIP.Text.Trim());            int port = Convert.ToInt32(txtPORT.Text.Trim());            IPEndPoint ipe = new IPEndPoint(ip, port);            socketWatch.Bind(ipe);            socketWatch.Listen(10);            threadWatch = new Thread(Watchconnecting);            threadWatch.IsBackground = true;            threadWatch.Start();            txtMsg.AppendText("开始监听！" + "\r\n");        }        Socket socConnection = null;        private void Watchconnecting()        {            while (true)            {                socConnection = socketWatch.Accept();                txtMsg.AppendText("客户端连接成功！" + "\r\n");                //创建一个通信线程                ParameterizedThreadStart pts = new ParameterizedThreadStart(ServerRecMsg);                Thread thr = new Thread(pts);                thr.IsBackground = true;                thr.Start(socConnection);            }        }        private void ServerRecMsg(object obj)        {            Socket socketServer = obj as Socket;            while (true)            {                byte[] RecvBytes = new byte[1024 * 1024];                int length = socketServer.Receive(RecvBytes);                string RecvStr = Encoding.UTF8.GetString(RecvBytes, 0, length);                txtMsg.AppendText("ZXY: " + GetTime() + "\r\n" + RecvStr + "\r\n");            }        }        private void SendMsg_Click(object sender, EventArgs e)        {            ServerSendMsg(txtSend.Text.Trim());        }        private void ServerSendMsg(string SendStr)        {            byte[] SendString = Encoding.UTF8.GetBytes(SendStr);            socConnection.Send(SendString);            txtMsg.AppendText("PYT: " + GetTime() + "\r\n" + SendStr + "\r\n");        }        private void txtSend_TextChanged(object sender, EventArgs e)        {        }        //Enter快捷键，光有代码不行，还需要将KeyDown属性设置一下！        private void txtSend_KeyDown(object sender, KeyEventArgs e)        {            if (e.KeyCode == Keys.Enter)            {                ServerSendMsg(txtSend.Text.Trim());            }        }        //获取当前的时间        private DateTime GetTime()        {            DateTime nowTime = new DateTime();            nowTime = DateTime.Now;            return nowTime;        }    }}

客户端：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;using System.Net;using System.Net.Sockets;using System.Threading;namespace Clients{    public partial class Client : Form    {        public Client()        {            InitializeComponent();            TextBox.CheckForIllegalCrossThreadCalls = false;        }        private void Client_Load(object sender, EventArgs e)        {        }        Socket socketClient = null;        Thread threadClient = null;        private void beginListen_Click(object sender, EventArgs e)        {            socketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            IPAddress ip = IPAddress.Parse(txtIP.Text.Trim());            int port = Convert.ToInt32(txtPORT.Text.Trim());            IPEndPoint ipe = new IPEndPoint(ip, port);            socketClient.Connect(ipe);            threadClient = new Thread(RecvMsg);            threadClient.IsBackground = true;            threadClient.Start();        }        private void RecvMsg()        {            while(true)            {                byte[] arrRecMsg = new byte[1024 * 1024];                int length = socketClient.Receive(arrRecMsg);                string strRecMsg = Encoding.UTF8.GetString(arrRecMsg, 0, length);                txtMsg.AppendText("PYT: " + GetTime() + "\r\n" + strRecMsg + "\r\n");            }        }        private void ClientSendMsg(string sendMsg)        {            byte[] arrClientSendMsg = Encoding.UTF8.GetBytes(sendMsg);            socketClient.Send(arrClientSendMsg);            txtMsg.AppendText("ZXY: " + GetTime() + "\r\n" + sendMsg + "\r\n");        }        private void Send_Click(object sender, EventArgs e)        {            ClientSendMsg(txtCMsg.Text.Trim());        }        private void txtCMsg_KeyDown(object sender, KeyEventArgs e)        {            if (e.KeyCode == Keys.Enter)            {                ClientSendMsg(txtCMsg.Text.Trim());            }        }        private DateTime GetTime()        {            DateTime nowTime = new DateTime();            nowTime = DateTime.Now;            return nowTime;        }            }}

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