局域网聊天小程序C#代码.docx
局域网聊天小程序C#代码局域网聊天小程序C#版代码 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Net; using System.Net.Sockets; using System.Threading; namespace ChatP2P public partial class MainForm : Form public MainForm InitializeComponent; CheckForIllegalCrossThreadCalls = false; TcpListener listener;/监听器对象 private void button3_Click(object sender, EventArgs e) Thread th = new Thread(new ThreadStart(StarReceiveMsg); th.Start;/开始监听进程，在后台运行 / <summary> / 接收聊天信息的方法 / </summary> private void StarReceiveMsg int port; try port = int.Parse(txtThisPort.Text); catch MessageBox.Show("端口号请输入数字！"); return; listener = new TcpListener(port); try listener.Start;/开始监听 catch /如果端口已经被占用将会报错。 MessageBox.Show("端口已被占用，请使用其它端口"); return; while (true)/确保监听器一直在后台运行，所以用死循环 TcpClient client = null; try client = listener.AcceptTcpClient;/监听远程连接 catch /如果点击停止将报错，停止监听 return; NetworkStream ns = client.GetStream;/创建NetworkStream对象 byte data = new byte1000;/定义接收数据的二进制数组 ns.Read(data, 0, 1000);/接收数据，数据有限制，最多只能接收1000个字节，如果要接收更多数据需要用循环读取 txtChatMsg.Text = Encoding.Unicode.GetString(data);/将接收到的数据转为字符串，并显示到文本框中 ns.Close;/关闭流对象 client.Close;/关闭client对象，以便下一次监听数据 private void SendMsg TcpClient client = new TcpClient; client.Connect(txtThatIP.Text, int.Parse(txtThatPort.Text);/连接到远程IP NetworkStream ns = client.GetStream; byte data = new byte1000;/创建存储数据的byte数组 data = Encoding.Unicode.GetBytes(txtMsg.Text);/将文本框中的字符串读取到byte数据中 ns.Write(data, 0, data.Length);/将数据写入到net流 ns.Flush;/提交数据 ns.Close;/关闭流 client.Close;/关闭client private void button2_Click(object sender, EventArgs e) /测试是否可以连接 try TcpClient client = new TcpClient; client.Connect(txtThatIP.Text, int.Parse(txtThatPort.Text); client.Close; MessageBox.Show("连接成功，可以发送聊天消息"); catch MessageBox.Show("连接失败"); private void button1_Click(object sender, EventArgs e) SendMsg; private void button4_Click(object sender, EventArgs e) listener.Stop;/停止监听器
