C#的TCPClient连接

最新推荐文章于 2025-06-17 00:00:42 发布

neok

最新推荐文章于 2025-06-17 00:00:42 发布

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文章标签： c# string byte null

本文链接：https://blog.youkuaiyun.com/neok/article/details/1195337

本文介绍如何使用C#实现TCP客户端连接并接收数据，同时提供了几种获取本机IP地址的方法。

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using System.Net;

using System.Net.Sockets;

          TcpClient tcpClient = new TcpClient();
            tcpClient.Connect("192.168.0.80", 23);
            try
            {
                byte[] Data = new Byte[1024];
                NetworkStream nsData = tcpClient.GetStream();
                Int32 bytes=nsData.Read(Data, 0, Data.Length);
                string receiveData = Encoding.ASCII.GetString(Data, 0, bytes);
                tcpClient.Close();
                this.textBox1.Text = receiveData;
            }
            catch
            {
                MessageBox.Show(e.ToString());
            }

获取本机IP的方法：

System.Net.IPAddress addr = new System.Net.IPAddress(Dns.GetHostByName(Dns.GetHostName()).AddressList[0].Address);

或

            string s =null;
            IPAddress[] addressList =new Dns.GetHostByName(Dns.GetHostName()).AddressList;
            for (int i = 0; i < addressList.Length; i++)
            {
                s += addressList[i].ToString();
                MessageBox.Show(s);
            }

或

            //MSDN推荐采用Dns.GetHostEntry方法
            string addressIP = null;
            string hostName = Dns.GetHostName();    //获取主机名
            IPAddress[] addressIPList = Dns.GetHostEntry(hostName).AddressList;
            for (int i = 0; i < addressIPList.Length; i++)
            {
                addressIP = addressIPList[i].ToString();
                MessageBox.Show(addressIP);
            }