//获取远程主机IP
   public string[] getRemoteIP(string RemoteHostName)
   {
    IPHostEntry ipEntry = Dns.GetHostByName(RemoteHostName);
    IPAddress[] IpAddr = ipEntry.AddressList;
    string[] strAddr = new string[IpAddr.Length];
    for (int i = 0; i < IpAddr.Length;i++ )
    {
        strAddr[i] = IpAddr[i].ToString();
    }
    return(strAddr);
   }

------解决方案--------------------

哈哈~ 看看这段代码~  

服务器端做一个程序,设定好IP地址和端口号,启动Listening事件

客户端直接用TCP/ip协议连接服务器的IP和端口号,发送请求事件,获取返回内容

这个是以前写的一个小程序的代码,你可以看看有没有帮助:

 private void StartServer()
 {
 string strIP = txtServerIP.Text.Trim();
 string strPort = txtServerPort.Text.Trim();
 string strFolder = this.txtSavePath.Text.Trim();
 Regex re = new Regex(@"^([\d]{4,5})$");
 Regex re1 = new Regex(@"^\d{2,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$");
 if (!re1.Match(strIP).Success)
 {
 MessageBox.Show("服务器地址错误！");
 txtServerIP.Focus();
 }
 else
 {
 if (!re.Match(strPort).Success)
 {
 MessageBox.Show("服务器端口号错误，正确的端口号应为1024-65535之间！");
 txtServerPort.Focus();
 }
 else
 {
 int intPort = Convert.ToInt32(strPort);
 if (intPort < 1024 || intPort > 65535)
 {
 MessageBox.Show("服务器端口号错误，正确的端口号应为1024-65535之间！");
 txtServerPort.Focus();
 }
 else
 {
 if (strFolder == "")
 {
 MessageBox.Show("错误的文件保存路径");
 txtSavePath.Focus();
 }
 else
 {
 if (!System.IO.Directory.Exists(strFolder))
 {
 MessageBox.Show("错误的文件保存路径");
 txtSavePath.Focus();
 }
 else
 {
 if (strFolder.Substring(strFolder.Length - 1, 1) != "\\") strFolder += "\\";
 MyServer server = new MyServer();
 txtServerIP.Enabled = false;
 txtServerPort.Enabled = false;
 txtSavePath.Enabled = false;
 blnIsOpen = true;
 this.button1.Enabled = false;
 this.button2.Enabled = true;
 listBox1.Items.Clear();
 listBox1.Items.Add("正在启动监听......");
 server.Folder = strFolder;
 server.IP = strIP;
 server.Port = intPort;
 Thread th = new Thread(new ThreadStart(server.Start));
 th.IsBackground = true;
 th.Start();
 while (blnIsOpen)
 {
 Application.DoEvents();
 string strMsg = server.State;
 string strErr = server.Error;
 if (strMsg != "")
 {
 if (listBox1.Items.Count > 100)
 {
 listBox1.Items.Clear();
 }
 listBox1.Items.Add(strMsg);
 server.State = "";
 }
 if (strErr != "")
 {
 txtErr.Text += "\r\n" + System.DateTime.Now + "　" + strErr;
 server.Error = "";
 th.Abort();
 intErrNum++;
 this.tabPage2.Text = "错误信息(" + intErrNum.ToString() + ")";
 }
 if (server.NeedReset)
 {
 //th.Abort();
 StartServer();
 }
 }
 }
 }
 }
 }
 }
 }



 public class MyServer
 {
 string strState = "";
 string strErr = "";
 string strIP = "";
 int intPort = 0;
 bool blnClose=false;
 TcpListener listener;
 string strPath = "";
 bool blnNeedReset = false;
 public MyServer()
 {
 blnClose = false;
 }

 public void Start()
 {
 strErr = "";
 try
 {
 listener = new TcpListener(IPAddress.Parse(strIP), intPort);
 Application.DoEvents();
 listener.Start(200);
 strState = "启动成功，正在监听是否有连