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?NetMeetingRoom
{
????public?partial?class?Form1?:?Form
????{
????????IPAddress?ip?=?IPAddress.Parse（“224.0.0.1“）;
????????int?port?=?1314;
????????private?UdpClient?udpClient;

????????#region?委托
????????delegate?void?SetRichtexboxCallback（string?value）;
????????private?void?SetRichTextBox（string?value）
????????{
????????????if?（richTextBoxMessage.InvokeRequired）
????????????{
????????????????SetRichtexboxCallback?s?=?new?SetRichtexboxCallback（SetRichTextBox）;
???????????????this.Invoke（s?value）;

????????????}
????????????else
????????????{
????????????????if?（richTextBoxMessage.Lines.Length?>?200）
????????????????{
???????????????????richTextBoxMessage.Clear（）;
????????????????}
???????????????
????????????????richTextBoxMessage.Select（richTextBoxMessage.Text.Length?0）;
????????????????richTextBoxMessage.ScrollToCaret（）;
????????????????richTextBoxMessage.AppendText（value）;
????????????}
????????}


????????delegate?void?SetListBoxCallback（string?value）;
????????private?void?SetListBox（string?value）
????????{
????????????if?（listBoxAddress.InvokeRequired）
????????????{
????????????????SetListBoxCallback?s?=?new?SetListBoxCallback（SetListBox）;
????????????????this.Invoke（s?value）;

????????????}
????????????else
????????????{
????????????????listBoxAddress.Items.Add（value）;
????????????}
????????}
????????#endregion

????????#region?發(fā)送消息
????????private?void?SendToAll（string?sendString）
????????{
????????????UdpClient?MyudpClient?=?new?UdpClient（）;
????????????MyudpClient.EnableBroadcast?=?true;
????????????IPEndPoint?iep?=?new?IPEndPoint（ip?port）;
????????????byte[]?bytes?=?System.Text.Encoding.Default.GetBytes（sendString）;
????????????try
????????????{
????????????????MyudpClient.Send（bytes?bytes.Length?iep）;
????????????}
????????????catch?（Exception?ex）
????????????{
????????????????MessageBox.Show（ex.Message?“發(fā)送失敗！“）;

????????????}
????????????finally
????????????{
????????????????MyudpClient.Close（）;
????????????}
????????}
????????#endregion

????????#region?接收消息
????????private?void?ReceiveMessage（）
????????{
????????????udpClient?=?new?UdpClient（port）;
????????????udpClient.JoinMulticastGroup（ip?50）;
????????????IPEndPoint?remote?=?null;
????????????while?（true）
????????????{
????????????????try
????????????????{
????????????????????byte[]?bytes=udpClient.Receive（ref?remote）;
????????????????????string?str=Encoding.Default.GetString（bytes0bytes.Length）;
????????????????????string[]?splitString=str.Split（‘#‘）;
????????????????????int?s=splitString[0].Length;
????????????????????switch?（splitString[0]）
????????????????????{
????????????????????????case?“l(fā)ogin“:????????????????????????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????12800??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\bin\Debug\NetMeetingRoom.exe

?????文件??????34304??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\bin\Debug\NetMeetingRoom.pdb

?????文件???????5632??2005-11-11?22:25??會議室\NetMeetingRoom\NetMeetingRoom\bin\Debug\NetMeetingRoom.vshost.exe

?????文件???????5959??2010-04-08?12:02??會議室\NetMeetingRoom\NetMeetingRoom\Form1.cs

?????文件???????8018??2010-04-08?11:21??會議室\NetMeetingRoom\NetMeetingRoom\Form1.Designer.cs

?????文件???????5814??2010-04-08?11:21??會議室\NetMeetingRoom\NetMeetingRoom\Form1.resx

?????文件???????3305??2010-04-09?10:51??會議室\NetMeetingRoom\NetMeetingRoom\NetMeetingRoom.csproj

?????文件????????909??2010-04-08?12:03??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.csproj.FileListAbsolute.txt

?????文件????????842??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.csproj.GenerateResource.Cache

?????文件??????12800??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.exe

?????文件????????180??2010-04-08?11:21??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.Form1.resources

?????文件??????34304??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.pdb

?????文件????????180??2010-04-08?10:23??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\NetMeetingRoom.Properties.Resources.resources

?????文件????????317??2010-04-09?10:53??會議室\NetMeetingRoom\NetMeetingRoom\obj\NetMeetingRoom.csproj.FileList.txt

?????文件????????475??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Program.cs

?????文件???????1370??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Properties\AssemblyInfo.cs

?????文件???????2878??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Properties\Resources.Designer.cs

?????文件???????5612??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Properties\Resources.resx

?????文件???????1099??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Properties\Settings.Designer.cs

?????文件????????249??2010-04-08?10:07??會議室\NetMeetingRoom\NetMeetingRoom\Properties\Settings.settings

?????文件????????931??2010-04-08?16:26??會議室\NetMeetingRoom\NetMeetingRoom.sln

????..A..H.?????13312??2010-04-09?11:41??會議室\NetMeetingRoom\NetMeetingRoom.suo

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\Refactor

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug\TempPE

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\bin\Debug

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\obj\Debug

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\bin

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\obj

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom\Properties

?????目錄??????????0??2010-03-09?11:19??會議室\NetMeetingRoom\NetMeetingRoom

............此處省略5個文件信息