C#局域网群聊私聊 源码下载

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO ;
using System.Net;
using System.Net .Sockets ;
using System.Threading ;
namespace class9_1_1Client
{
    public partial class Form2 : Form
    {
        public Form2()
        {
            InitializeComponent();
            Form.CheckForIllegalCrossThreadCalls = false;
        }
        public TcpClient tc;
        public string name;
        private void Form2_Load(object sender, EventArgs e)
        {
            new Thread(new ThreadStart(ReceiveData)).Start();
        }
        public delegate void MyDel(string myIp, int myPort, string youIP, int youPort); 
        public void ShowForm(string myIP, int myPort, string youIP, int youPort)
        {
            Form3 frm = new Form3();
            frm.myIp = myIP;
            frm.myPort = myPort;
            frm.youIp =youIP;
            frm.youPort = youPort;
            frm.Show();
        }
        private void ReceiveData()
        {
            Stream s = tc.GetStream();
            StreamReader sr = new StreamReader(s);
            StreamWriter sw = new StreamWriter(s);
            while (true)
            { 
                
                string message=sr.ReadLine();
                string[] results = message.Split('|');
                switch (results[0])
                {
                    case "ALLUSER":
                        listBox1.Items.Add("所有人");
                        for (int i = 1; i < results.Length; i  )
                        {
                            listBox1.Items.Add(results[i]);
                        }
                        break;
                    case "LOGIN":
                        listBox1.Items.Add(results[1]);
                        textBox1.Text  = "【"   results[1]   "】登录了，大家欢迎他！\r\n";
                        break;
                    case "CHATALL":
                        textBox1.Text  = results[1]   "说："   results[2] "\r\n";
                        break;
                    case "CHATTO":
                        textBox1.Text  = results[1] "对" results [2]   "说："   results[3]   "\r\n";
                        break;
                    case "PRIV":
                        textBox1.Text  = results[1]   "对"   results[2]   "悄悄的说："   results[3]   "\r\n";
                        break;
                    case "CREATE":
                        DialogResult dr=MessageBox.Show(results[1] "正在向您请求在私聊窗口中单聊，您是否同意？", "私聊窗口请求", MessageBoxButtons.YesNo);
                        if (dr == DialogResult.Yes)
                        {
                             string ip=Dns.GetHostAddresses(Dns.GetHostName())[1].ToString();
                              int port = new Random().Next(5001, 10000);
                            //构造AGREE消息并发送给服务器
                              string AGREE = "AGREE|"   results[2]   "|"   results[1]   "|"   ip   "|"   port;
                              sw.WriteLine(AGREE);
                              sw.Flush();
                             
                              this.Invoke(new MyDel(ShowForm), ip, port, results[3], int.Parse(results[4]));

                        }
                        else
                        {
                            string DEGREE = "DEGREE|"   results[2]   "|"   results[1];
                            sw.WriteLine(DEGREE);
                            sw.Flush();
                            //构造DEGREE消息，并发送给服务器
                        }
                        break;
                        //接收DEGREE,弹出MessageBox
                    case "DEGREE":
                        MessageBox.Show(results[1]   "拒绝了您");
                        break;
                        //接收AGREE，弹出MessageBox
                    case "AGREE":
                          
                        this.Invoke(new MyDel(ShowForm), ip1, int.Parse(port1.ToString()), results[3], int.Parse(results[4]));

                        break;
                }
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Stream s = tc.GetStream();
            StreamWriter sw = new StreamWriter(s);
            switch (listBox1.SelectedIndex)
            {
                case -1:    
                case 0:
                    string message = "CHATALL|"   name   "|"   textBox2.Text;
                    sw.WriteLine(message);
                    sw.Flush();
                    break;
                default:
                    if (checkBox1.Checked)
                    {
                        string message2 = "PRIV|"   name   "|"   listBox1.SelectedItem   "|"   textBox2.Text;
                        sw.WriteLine(message2);
                        sw.Flush();
                    }
                    else
                    {
                        string message1 = "CHATTO|"   name   "|"   listBox1.SelectedItem   "|"   textBox2.Text;
                        sw.WriteLine(message1);
                        sw.Flush();
                    }
                    break;
            }
        }
        public string ip1;
        public int  port1;
        private void listBox1_DoubleClick(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex > 0)
            {
                string ip=Dns.GetHostAddresses(Dns.GetHostName())[1].ToString();
                int port = new Random().Next(5001, 10000);
                ip1 = ip;
                port1 = port;
              
                string message = "CREATE|"   name   "|"   listBox1.SelectedItem "|" ip "|" port;
                Stream s = tc.GetStream();
                StreamWriter sw = new StreamWriter(s);
                sw.WriteLine(message);
                sw.Flush();
            }
        }

    }
}