第一步画页面

页面参考https://github.com/yanchao891012/WPF_WeChat/tree/master/WeChat.NET仿微信的页面

加了截图发送图片

效果这样，点击右下角图标显示，可以拖动位置、隐藏、最大化（请忽略工具条里的颜色选择器，做的颜色选择器在这里试试，没啥意义）

截图大概这样

发送消息

截图代码也是网上找的，做了些改动，不记得是哪里了，有需要的可以找我要，这里就不贴了

页面画好了下面就要些服务端了

第二步 socket服务

写的比较简单

直接贴代码把，这个自己写的随便拿去用

程序入口
Program.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web.Script.Serialization;
using System.Windows.Forms;

namespace PW.SocketServer
{
    static class Program
    {
        static MyServer myServer = null;
        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            //Application.EnableVisualStyles();
            //Application.SetCompatibleTextRenderingDefault(false);
            myServer = MyServer.GetInstance();
            //myServer.ReceivedMsg = new MyServer.ReceivedMsgHandler(socketClient_ReceivedMsg);
           
            //Application.Run(new FormMain());

           
            FormMain main = null;

            new Thread((ThreadStart)delegate
            {
                main = new FormMain();
                Application.Run(main);
            }).Start();

            myServer.BeginServer();
            Console.ReadLine();
        }
    }
}

在启动服务的时候，同时启动的一个窗口，用来测试的

MyServer.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PW.SocketServer
{
    
    public class MyServer
    {
        Thread threadWatch = null;// 负责监听客户端的线程
        Socket socketWatch = null;// 负责监听客户端的套接字
        Dictionary<String, ClientUser> clientList = null;
        Int32 con_msg_length = 10240;

        private static MyServer uniqueInstance;

        public delegate void ReceivedMsgHandler(string msg);
        public ReceivedMsgHandler ReceivedMsg;//自定义事件

        public delegate void ClientChangeHandler(ClientUser client, Dictionary<String, ClientUser> clientList);

        public ClientChangeHandler ClientAdd;//自定义事件
        public ClientChangeHandler ClientRemove;//自定义事件
        /// <summary>
        /// 获取单例
        /// </summary>
        /// <returns></returns>
        public static MyServer GetInstance()
        {
            // 如果类的实例不存在则创建，否则直接返回
            if (uniqueInstance == null)
            {
                uniqueInstance = new MyServer();
            }
            return uniqueInstance;
        }

        private MyServer()
        {
            try
            {
                string ServerIP = System.Configuration.ConfigurationManager.AppSettings["ServerIP"].ToString();
                string ServerPort = System.Configuration.ConfigurationManager.AppSettings["ServerPort"].ToString();
                con_msg_length = Int32.Parse(System.Configuration.ConfigurationManager.AppSettings["MsgLength"].ToString());
                IPAddress ip = null;
                if (string.IsNullOrEmpty(ServerIP))
                {
                    ip = IPAddress.Any;//创建IP//Any 字段等效于以点分隔的四部分表示法格式的 0.0.0.0 这个IP地址，实际是一个广播地址。//对于SOCKET而言，使用 any ，表示，侦听本机的所有IP地址的对应的端口（本机可能有多个IP或只有一个IP）
                }
                else
                {
                    ip = IPAddress.Parse(ServerIP);//监听指定ip
                }
                IPEndPoint point = new IPEndPoint(ip, Convert.ToInt32(ServerPort));//创建终结点（EndPoint）
                clientList = new Dictionary<string, ClientUser>();

                // 定义一个套接字用于监听客户端发来的消息，包含三个参数（ipv4寻址协议，流式连接，tcp协议）
                socketWatch = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                // 监听绑定的网路节点
                socketWatch.Bind(point);
                // 将套接字的监听队列长度设置限制为0，0表示无限
                socketWatch.Listen(0);

                // 创建一个监听线程
                threadWatch = new Thread(WatchConnecting);
                threadWatch.IsBackground = true;
               
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        public void BeginServer()
        {
            try
            {
                threadWatch.Start();
                AppendText("成功启动监听！");
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        /// <summary>
        ///  监听客户端发来的请求
        /// </summary>
        private void WatchConnecting()
        {
            //持续不断监听客户端发来的请求
            while (true)
            {
                try
                {
                    Socket clientSocket = socketWatch.Accept();
                    byte[] recMsg = new byte[con_msg_length];
                    if (clientSocket != null && clientSocket.Connected)
                    {
                        int length = clientSocket.Receive(recMsg);
                        string msg = "";
                        if (length > 0)
                        {
                            //将机器接受到的字节数组转换为人可以读懂的字符串
                            msg = Encoding.UTF8.GetString(recMsg, 0, length);
                        }
                        AppendText("==[" + msg + "]==" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "\r\n");
                        SocketMsg smsg = new SocketMsg();
                        try
                        {
                            smsg.setAllParametersJsonStr(msg);
                        }
                        catch
                        {

                        }
                        Hashtable param = smsg.getAllParameters();
                        ClientUser cu = new ClientUser();
                        cu.ClientSocket = clientSocket;
                        IPEndPoint ip = (IPEndPoint)clientSocket.RemoteEndPoint;
                        cu.CliIp = ip.Address.ToString();
                        cu.CliPort = ip.Port.ToString();
                        cu.LoginTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                        AppendText("客户端连接！" + cu.CliIp + ":" + cu.CliPort + "\r\n");
                        string userno = "";
                        if (param != null && param.Count > 0)
                        {
                            userno = param["UserNo"].ToString();
                            cu.UserNo = userno;
                            cu.UserName = param["UserName"].ToString();
                        }
                        if (!clientList.ContainsKey(userno))
                        {
                            clientList.Add(userno, cu);
                            if (ClientAdd != null)
                            {
                                ClientAdd(cu, clientList);
                            }
                        }
                        else
                        {
                            if (ClientRemove != null)
                            {
                                ClientRemove(clientList[userno], clientList);
                            }
                            clientList.Remove(userno);
                            
                            clientList.Add(userno, cu);
                            if (ClientAdd != null)
                            {
                                ClientAdd(cu, clientList);
                            }
                        }
                        AppendText("客户端连接成功！" + msg + "\r\n");
                        // 创建一个通信线程
                        ParameterizedThreadStart pts = new ParameterizedThreadStart(acceptMsg);
                        Thread thr = new Thread(pts);
                        thr.IsBackground = true;
                        thr.Start(clientSocket);
                    }
                }
                catch (Exception ex)
                {
                    WriteTxtLog(ex.Message);
                }
            }
        }

        /// <summary>
        ///  接收客户端发来的消息
        /// </summary>
        /// <param name="socket">客户端套接字对象</param>
        private void acceptMsg(object socket)
        {
            Socket socketServer = socket as Socket;
            while (true)
            {
                try
                {
                    //创建一个内存缓冲区 其大小为1024*1024字节  即1M
                    byte[] recMsg = new byte[con_msg_length];
                    //将接收到的信息存入到内存缓冲区,并返回其字节数组的长度
                    int length = socketServer.Receive(recMsg);
                    //将机器接受到的字节数组转换为人可以读懂的字符串
                    if (length > 0)
                    {
                        try
                        {
                            string msg = Encoding.UTF8.GetString(recMsg, 0, length);
                            AppendText("==[" + msg + "]==" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "\r\n");
                            SocketMsg smsg = new SocketMsg();
                            try
                            {
                                smsg.setAllParametersJsonStr(msg);
                            }
                            catch
                            {

                            }
                            Hashtable param = smsg.getAllParameters();
                            if (param != null && param.Count > 0)
                            {
                                AppendText("客户端(" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "):" + smsg.ConvertJson2Str(param["msgContent"]) + "\r\n");

                                string usernos = param["UserNo"] == null ? "" : param["UserNo"].ToString();
                                string[] nos = usernos.Split(',');
                                if (nos != null && nos.Length > 0)
                                {
                                    //转发消息到目标客户端
                                    foreach (string no in nos)
                                    {
                                        if (clientList.ContainsKey(no) && clientList[no].ClientSocket != socketServer)
                                        {
                                            serverSendMsg(clientList[no].ClientSocket, smsg.ConvertJson2Str(param["msgContent"]));
                                        }
                                    }
                                }
                            }
                        }
                        catch (Exception exx)
                        {
                            AppendText("" + exx.Message + "(" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "):\r\n");
                        }
                    }
                    else
                    {
                        string clin = "";
                        foreach (string key in clientList.Keys)
                        {
                            if (clientList[key].ClientSocket == socketServer)
                            {
                                clin = "userno:" + clientList[key].UserNo + "  name:" + clientList[key].UserName + "  ip:" + clientList[key].CliIp;
                                if (ClientRemove != null)
                                {
                                    ClientRemove(clientList[key], clientList);
                                }
                                clientList.Remove(key);
                                break;
                            }
                        }
                        AppendText("客户端[" + clin + "]断开(" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "):\r\n");
                        socketServer.Disconnect(true);
                        socketServer.Close();
                        break;
                    }
                }
                catch (Exception ex)
                {
                    string clin = "";
                    foreach (string key in clientList.Keys)
                    {
                        if (clientList[key].ClientSocket == socketServer)
                        {
                            clin = "userno:" + clientList[key].UserNo + "  name:" + clientList[key].UserName + "  ip:" + clientList[key].CliIp;
                            if (ClientRemove != null)
                            {
                                ClientRemove(clientList[key], clientList);
                            }
                            clientList.Remove(key);
                            break;
                        }
                    }
                    AppendText("客户端[" + clin + "]断开(" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "):\r\n");
                    socketServer.Disconnect(true);
                    socketServer.Close();
                    break;
                }
            }
        }

        /// <summary>
        ///  发送消息到客户端
        /// </summary>
        /// <param name="msg"></param>
        public void serverSendMsg(Socket clientSocket, string msg)
        {
            try
            {
                byte[] sendMsg = Encoding.UTF8.GetBytes(msg);
                clientSocket.Send(sendMsg);
                AppendText("服务端(" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "):" + msg + "\r\n");
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }


        private void AppendText(String theContent)
        {
            Console.WriteLine(theContent);
            WriteTxtLog(theContent);
        }

        private void WriteTxtLog(String theContent)
        {
            try
            {
                String theFileName = DateTime.Now.ToString("yyyyMMdd") + ".txt";
                String theFilePath = Application.StartupPath + "\\MsgLog\\";
                String theFullName = theFilePath + theFileName;

                //判断文件夹是否存在
                if (Directory.Exists(theFilePath) == false)//如果不存在就创建file文件夹
                {
                    Directory.CreateDirectory(theFilePath);
                }

                StreamWriter sw = null;
                //判断文件是否存在
                if (File.Exists(theFullName))
                {
                    sw = File.AppendText(theFullName);
                }
                else
                {
                    sw = File.CreateText(theFullName);//创建该文件
                }
                //导出传盘文件
                //开始写入
                sw.WriteLine(theContent);
                //关闭流
                sw.Close();
            }
            catch (Exception ex)
            {

            }
        }
        public Dictionary<String, ClientUser> getClient()
        {
            return clientList;
        }
    }
}

SocketMsg.cs

using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;

namespace PW.SocketServer
{
    public class SocketMsg
    {
        /// <summary>
        /// 请求的参数
        /// </summary>
        protected Hashtable parameters;

        /// <summary>
        /// 获取参数值
        /// </summary>
        /// <param name="parameter">参数名</param>
        /// <returns></returns>
        public string getParameter(string parameter)
        {
            string s = (string)parameters[parameter];
            return (null == s) ? "" : s;
        }

        /// <summary>
        /// 设置参数值
        /// </summary>
        /// <param name="parameter">参数名</param>
        /// <param name="parameterValue">参数值</param>
        public void setParameter(string parameter, string parameterValue)
        {
            if (parameter != null && parameter != "")
            {
                if (parameters.Contains(parameter))
                {
                    parameters.Remove(parameter);
                }

                parameters.Add(parameter, parameterValue);
            }
        }

        /// <summary>
        /// 获取所有参数
        /// </summary>
        /// <returns></returns>
        public Hashtable getAllParameters()
        {
            return this.parameters;
        }

        /// <summary>
        /// 获取所有参数Json
        /// </summary>
        /// <returns></returns>
        public String getAllParametersJsonStr()
        {
            JavaScriptSerializer jsser = new JavaScriptSerializer();
            String jsonStr = jsser.Serialize(this.parameters);
            return jsonStr;
        }

        /// <summary>
        /// 获取所有参数Json
        /// </summary>
        /// <returns></returns>
        public void setAllParametersJsonStr(String jsonStr)
        {
            JavaScriptSerializer jsser = new JavaScriptSerializer();
            parameters = jsser.Deserialize<Hashtable>(jsonStr);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public String ConvertJson2Str(object json)
        {
            try
            {
                JavaScriptSerializer jsser = new JavaScriptSerializer();
                String jsonStr = jsser.Serialize(json);
                return jsonStr;
            }
            catch
            {
                return json.ToString();
            }
        }
    }
}

ClientUser.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace PW.SocketServer
{
    public class ClientUser
    {
        public string UserNo { get; set; }
        public string UserName { get; set; }
        public string LoginTime { get; set; }
        public string CliIp { get; set; }
        public string CliPort { get; set; }
        public Socket ClientSocket { get; set; }
    }
}

不太会贴form代码

来个截图，就是来显示一下在线人员，和像指定的人发个消息，myserver，那里留的有口儿，这里只是用

cs代码

FormMain.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.IO;

namespace PW.SocketServer
{
    public partial class FormMain : Form
    {
        MyServer myServer = null;
      
        public FormMain()
        {
            myServer = MyServer.GetInstance();
            myServer.ClientAdd = new MyServer.ClientChangeHandler(myServer_ClientAdd);
            myServer.ClientRemove = new MyServer.ClientChangeHandler(myServer_ClientRemove);
            InitializeComponent();
            //关闭对文本框的非法线程操作检查
            TextBox.CheckForIllegalCrossThreadCalls = false;
            DataGridView.CheckForIllegalCrossThreadCalls = false;
        }

        void myServer_ClientAdd(ClientUser client, Dictionary<String, ClientUser> clientList)
        {
            LoadGrid();
        }

        void myServer_ClientRemove(ClientUser client, Dictionary<String, ClientUser> clientList)
        {
            LoadGrid();
        }

        private void FormMain_Load(object sender, EventArgs e)
        {
        }


        private void LoadGrid()
        {
            try
            {
                dataGridView1.Rows.Clear();
                Dictionary<String, ClientUser> tmps = myServer.getClient();
                foreach (ClientUser cu in tmps.Values)
                {
                    dataGridView1.Rows.Add(1);
                    dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["UserNo"].Value = cu.UserNo;
                    dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["UserName"].Value = cu.UserName;
                    dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["CliIp"].Value = cu.CliIp;
                    dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["CliPort"].Value = cu.CliPort;
                    dataGridView1.Rows[dataGridView1.Rows.Count - 1].Cells["LoginTime"].Value = cu.LoginTime;
                }
            }
            catch (Exception ex)
            {
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if(dataGridView1.SelectedRows.Count>0)
            {
                string msg = "{title:'" + txtTitle.Text + "',content:'" + txtContent.Text + "'}";
                Dictionary<String, ClientUser> tmps = myServer.getClient();
                try
                {
                    
                    foreach (DataGridViewRow row in dataGridView1.SelectedRows)
                    {
                        if (tmps.ContainsKey(row.Cells["UserNo"].Value.ToString()))
                        {
                            myServer.serverSendMsg(tmps[row.Cells["UserNo"].Value.ToString()].ClientSocket, msg);
                        }
                    }
                }
                catch
                {
                    foreach (DataGridViewRow row in dataGridView1.SelectedRows)
                    {
                        var query = tmps.SingleOrDefault(p => p.Value.CliIp == row.Cells["CliIp"].Value.ToString());
                        if (query.Value != null)
                        {
                            myServer.serverSendMsg(query.Value.ClientSocket, msg);
                        }
                    }
                }
            }
        }

        private void AppendText(String theContent)
        {
            Console.WriteLine(theContent);
            WriteTxtLog(theContent);
        }

        private void WriteTxtLog(String theContent)
        {
            try
            {
                String theFileName = DateTime.Now.ToString("yyyyMMdd") + ".txt";
                String theFilePath = Application.StartupPath + "\\MsgLog\\";
                String theFullName = theFilePath + theFileName;

                //判断文件夹是否存在
                if (Directory.Exists(theFilePath) == false)//如果不存在就创建file文件夹
                {
                    Directory.CreateDirectory(theFilePath);
                }

                StreamWriter sw = null;
                //判断文件是否存在
                if (File.Exists(theFullName))
                {
                    sw = File.AppendText(theFullName);
                }
                else
                {
                    sw = File.CreateText(theFullName);//创建该文件
                }
                //导出传盘文件
                //开始写入
                sw.WriteLine(theContent);
                //关闭流
                sw.Close();
            }
            catch (Exception ex)
            {

            }
        }
    }
}

配置文件--比较简单

到这里一个简单的socket已经写好了，写的比较i简单，可能不太稳定，本来想用之前用java写的那套服务呢，想想最后还是用C#写了

第三步连通前后台

主要就是一个类

SocketClient.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net.Sockets;
using System.Threading;
using System.Net;

namespace PW.Infrastructure
{

    public class SocketClient
    {
        private static SocketClient uniqueInstance;
        // 创建一个客户端套接字
        Socket clientSocket = null;
        // 创建一个监听服务端的线程
        Thread threadServer = null;

        string start_msg = "";

        public delegate void ReceivedMsgHandler(string msg);
        public ReceivedMsgHandler ReceivedMsg;//自定义事件
        private SocketClient()
        {
            try
            {
                start_msg = "{UserNo:'" + GlobalData.UserName + "',UserName:'" + GlobalData.NickName + "'}";
            }
            catch(Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        /// <summary>
        /// 获取单例
        /// </summary>
        /// <returns></returns>
        public static SocketClient GetInstance()
        {
            // 如果类的实例不存在则创建，否则直接返回
            if (uniqueInstance == null)
            {
                uniqueInstance = new SocketClient();
            }
            return uniqueInstance;
        }

        public void BeginConnect()
        {
            try
            {
                clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                IPAddress ip = IPAddress.Parse(GlobalData.SocketIP);

                clientSocket.BeginConnect(ip, GlobalData.SocketPort, (args) =>
                {
                    if (args.IsCompleted)   //判断该异步操作是否执行完毕
                    {
                        Byte[] bytesSend = new Byte[GlobalData.SocketMsgSize];
                        bytesSend = Encoding.UTF8.GetBytes(start_msg);  //用户名，这里是刚刚连接上时需要传过去
                        if (clientSocket != null && clientSocket.Connected)
                        {
                            clientSocket.Send(bytesSend);
                            WriteTxtLog("链接成功(" + GetCurrentTime() + "):\r\n");
                            // 创建一个线程监听服务端发来的消息
                            threadServer = new Thread(recMsg);
                            threadServer.IsBackground = true;
                            threadServer.Start();
                        }
                        else
                        {
                            WriteTxtLog("服务器未开启(" + GetCurrentTime() + "):\r\n");
                            // 创建一个线程监听服务端发来的消息
                            threadServer = new Thread(recMsg);
                            threadServer.IsBackground = true;
                            threadServer.Start();
                        }
                    }
                }, null);
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        /// <summary>
        ///  接收服务端发来的消息
        /// </summary>
        private void recMsg()
        {
            while (true) //持续监听服务端发来的消息
            {
                //定义一个1M的内存缓冲区 用于临时性存储接收到的信息
                byte[] arrRecMsg = new byte[GlobalData.SocketMsgSize];
                int length = 0;
                try
                {
                    //将客户端套接字接收到的数据存入内存缓冲区, 并获取其长度
                    length = clientSocket.Receive(arrRecMsg);

                    //将套接字获取到的字节数组转换为人可以看懂的字符串
                    string strRecMsg = Encoding.UTF8.GetString(arrRecMsg, 0, length);
                    if (ReceivedMsg != null)
                    {
                        ReceivedMsg(strRecMsg);
                    }
                    //将发送的信息追加到聊天内容文本框中
                    WriteTxtLog("服务端(" + GetCurrentTime() + "):" + strRecMsg + "\r\n");
                }
                catch(Exception ex)
                {
                    WriteTxtLog("" + ex.Message+ ":\r\n");
                    WriteTxtLog("服务器已关闭(" + GetCurrentTime() + "):\r\n");
                    //重连
                    Thread.Sleep(10 * 1000);
                    if (!clientSocket.Connected)
                    {
                        clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                        clientSocket.BeginConnect(IPAddress.Parse(GlobalData.SocketIP), GlobalData.SocketPort, (args) =>
                        {
                            if (args.IsCompleted)   //判断该异步操作是否执行完毕
                            {
                                Byte[] bytesSend = new Byte[GlobalData.SocketMsgSize];
                                bytesSend = Encoding.UTF8.GetBytes(start_msg);  //用户名，这里是刚刚连接上时需要传过去
                                if (clientSocket != null && clientSocket.Connected)
                                {
                                    clientSocket.Send(bytesSend);
                                    WriteTxtLog("重连链接成功(" + GetCurrentTime() + "):\r\n");
                                }
                                else
                                {
                                    WriteTxtLog("重连失败服务器已关闭(" + GetCurrentTime() + "):\r\n");
                                }
                            }
                        }, null);
                    }
                }
            }
        }

        /// <summary>
        /// 发送消息到服务端
        /// </summary>
        /// <param name="msg"></param>
        public void SendMsg(string title, string content, string userno)
        {
            try
            {
                string msg = "{title:'" + title + "',content:'" + content + "'}";
                //userno:"001,002,003"
                if (string.IsNullOrEmpty(userno))
                {
                    userno = "0";
                }
                string msgcon = "{msgType:'msg',msgContent:'" + msg + "',UserNo:'" + userno + "'}";
                clientSendMsg(msgcon);
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        public void CloseConnect()
        {
            try
            {
                if (clientSocket != null)
                    clientSocket.Close();
                if (threadServer != null && threadServer.IsAlive)
                {
                    threadServer.Abort();
                }
                clientSocket = null;
                threadServer = null;
            }
            catch (Exception ex)
            {
                WriteTxtLog(ex.Message);
            }
        }

        /// <summary>
        /// 发送消息到服务端
        /// </summary>
        /// <param name="msg"></param>
        public void clientSendMsg(string msg)
        {
            byte[] sendMsg = Encoding.UTF8.GetBytes(msg);
            clientSocket.Send(sendMsg);
            WriteTxtLog("客户端(" + GetCurrentTime() + "):" + msg + "\r\n");
        }
        /// <summary>
        /// 获取当前系统时间的方法
        /// </summary>
        /// <returns>当前时间</returns>
        private DateTime GetCurrentTime()
        {
            DateTime currentTime = new DateTime();
            currentTime = DateTime.Now;
            return currentTime;
        }

        public static void WriteTxtLog(String theContent)
        {
            try
            {
                //String theFileName = DateTime.Now.ToString("yyyyMMdd") + ".txt";
                //String theFilePath = Application.StartupPath +"\\MsgLog\\";
                //String theFullName = theFilePath + theFileName;

                ////判断文件夹是否存在
                //if (Directory.Exists(theFilePath) == false)//如果不存在就创建file文件夹
                //{
                //    Directory.CreateDirectory(theFilePath);
                //}

                //StreamWriter sw = null;
                ////判断文件是否存在
                //if (File.Exists(theFullName))
                //{
                //    sw = File.AppendText(theFullName);
                //}
                //else
                //{
                //    sw = File.CreateText(theFullName);//创建该文件
                //}
                ////导出传盘文件
                ////开始写入
                //sw.WriteLine(theContent);
                ////关闭流
                //sw.Close();
            }
            catch (Exception ex)
            {

            }
        }
    }

}

用的话就就是在登录系统后连接服务器

SocketClient socketClient = null;
socketClient = SocketClient.GetInstance();
//socketClient.ReceivedMsg = new SocketClient.ReceivedMsgHandler(socketClient_ReceivedMsg);
socketClient.BeginConnect();

发送消息

SocketClient sc = SocketClient.GetInstance();
sc.SendMsg("test", msg.Msg,this._userName);

聊天接收消息

SocketClient socketClient = SocketClient.GetInstance();
socketClient.ReceivedMsg = new SocketClient.ReceivedMsgHandler(socketClient_ReceivedMsg);

这里是在聊天的模块接口socket的消息，这是一个比较懒的写法，按说把应该把消息统一接收，然后用prism的模块之间的通信机制来实现聊天模块的消息接收，因为现在SocketClient是一个单例，你在一个模块设置ReceivedMsg之后，另一个模块设置的ReceivedMsg应该就无效了，，，，这里实际用的话不能像我这样写，，，，后续我也会改掉

然后看一下测试结果

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