UDP网路会议室的代码

　　UDP网络会议室视频已经录制好，这里贴上代码仅供参考

　　MainWindow代码：

　　

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;
 using System.Net;
 using System.Net.Sockets;

 namespace NetWork
 {
     /// <summary>
     /// MainWindow.xaml 的交互逻辑
     /// </summary>
     public partial class MainWindow : Window
     {
         IPAddress ip;
         public MainWindow()
         {

              IPAddress [] ips=Dns .GetHostAddresses (Dns.GetHostName());
         foreach (var  v in ips )
        {
             if ( v .AddressFamily ==AddressFamily.InterNetwork )
             {
                 ip = v;
             }
         }
             InitializeComponent();
         }

         private void button1_Click(object sender, RoutedEventArgs e)
         {

             Client c1 = new Client();
             c1.Title = "客户端1";
             c1.Local = new IPEndPoint(ip, );
             c1.username = "张三";
             c1.Show();

             Client c2 = new Client();
             c2.Title = "客户端2";
             c2.Local = new IPEndPoint(ip, );
             c2.username = "李四";
             c2.Show();

             Client c3 = new Client();
             c3.Title = "客户端3";
             c3.Local = new IPEndPoint(ip, );
             c3.username = "王五";
             c3.Show();
         }
     }
 }

　　Client代码：

　　

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Shapes;
 using System.Net;
 using System.Net.Sockets;
 using System.Threading;

 namespace NetWork
 {
     /// <summary>
     /// Client.xaml 的交互逻辑
     /// </summary>
     public partial class Client : Window
     {
         public IPEndPoint Local  ;
         public IPEndPoint Remote=null;
         public UdpClient udpclient;
         public string username {
             get { return textBox1 .Text; }
             set { textBox1.Text = value; }
         }
         private IPAddress multicastAddress = IPAddress.Parse("224.0.1.10");
         private bool isExit = false;
         public Client()
         {
             InitializeComponent();
         }
         private void Window_Loaded(object sender, RoutedEventArgs e)
         {
             button3.IsEnabled = false;
             udpclient = new UdpClient(Local);
             udpclient.JoinMulticastGroup(multicastAddress);

         }
         public void ReceiveMessage( )
         {
             while (isExit ==false)
             {
                 try
                 {
                     byte [] result = udpclient.Receive(ref Remote);
                     string message = Encoding.Unicode.GetString(result);
                     string[] array = message.Split(',');
                     string command = array[];

                     switch (command)
                     {
                         case "Login":
                             string nm = array[];
                             AddUser(nm );
                             break;
                         case "Logout":
                             RemoveUser(array [] );
                             break;
                         case "Say":
                             AddSay(array [] +":"+array []);
                             break;
                         default:
                             break;
                     }
                 }
                 catch
                 {
                     break;
                 }
             }
         }

         private void button3_Click(object sender, RoutedEventArgs e)
         {
             SendMessage("Say,"+username+","+textBox2 .Text );
         }

         private void button1_Click(object sender, RoutedEventArgs e)
         {

             Thread t1 = new Thread(ReceiveMessage);
             t1.Start();
             SendMessage("Login," + username);

             button1.IsEnabled = false;
             button3.IsEnabled = true;

         }
         public void SendMessage(string message)
         {
             byte[] bytes = Encoding.Unicode.GetBytes(message);

             for (int i = ; i < ; i++)
             {
                 udpclient.Send(bytes, bytes.Length, multicastAddress.ToString(), i);
             }    

         }
         private void RemoveUser(string name)
         {
             Action act = delegate()
             {
                 listBox1.Items.Remove(name);

             };
             listBox1.Dispatcher.Invoke(act );
         }
         private void AddUser( string name1)
         {
             Action act = delegate()
            {
                 listBox1.Items.Add(name1);
             };
             listBox1.Dispatcher.Invoke(act);

         }
         private void AddSay(string message )
         {
             Action act = delegate()
             {
                 textBlock1.Text += message+"\n";
             };
             textBlock1.Dispatcher.Invoke(act);

         }

         private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
         {
             isExit = true;
             SendMessage("Logout,"+username);
             udpclient.DropMulticastGroup(multicastAddress);
             udpclient.Close();       

         }

     }
 }

　　一个普通的本科大学生，平常的时候无所事事不学习，临近考试却拼命的补习.几天时间就能学半学期的知识，早干嘛去了.悲哀.