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, 8001);
            c1.username = "张三";
            c1.Show();

            Client c2 = new Client();
            c2.Title = "客户端2";
            c2.Local = new IPEndPoint(ip, 8002);
            c2.username = "李四";
            c2.Show();

            Client c3 = new Client();
            c3.Title = "客户端3";
            c3.Local = new IPEndPoint(ip, 8003);
            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[0];
                    
                    switch (command)
                    {
                        case "Login":
                            string nm = array[1];
                            AddUser(nm );
                            break;
                        case "Logout":
                            RemoveUser(array [1] );
                            break;
                        case "Say":
                            AddSay(array [1] +":"+array [2]);
                            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 = 8001; i < 8004; 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+"
";
            };
            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.