using?System;
using?System.Collections.Generic;
using?System.Text;
using?System.Net.Sockets;
using?System.Threading;
using?System.IO;

namespace?BroadcastExample
{
????public?class?ConnectionClient
????{
????????Socket?sokMsg;
????????DGShowMsg?dgShowMsg;//負(fù)責(zé)?向主窗體文本框顯示消息的方法委托
????????DGShowMsg?dgRemoveConnection;//?負(fù)責(zé)?從主窗體?中移除?當(dāng)前連接
????????Thread?threadMsg;

???????

????????#region?構(gòu)造函數(shù)
????????///?

????????///?
????????///?

????????///?通信套接字
????????///?向主窗體文本框顯示消息的方法委托
????????public?ConnectionClient（Socket?sokMsg?DGShowMsg?dgShowMsg?DGShowMsg?dgRemoveConnection）
????????{
????????????this.sokMsg?=?sokMsg;
????????????this.dgShowMsg?=?dgShowMsg;
????????????this.dgRemoveConnection?=?dgRemoveConnection;

????????????this.threadMsg?=?new?Thread（RecMsg）;
????????????this.threadMsg.IsBackground?=?true;
????????????this.threadMsg.Start（）;
????????}
????????#endregion

????????bool?isRec?=?true;
????????#region?02負(fù)責(zé)監(jiān)聽客戶端發(fā)送來的消息
????????void?RecMsg（）
????????{
????????????while?（isRec）
????????????{
????????????????try
????????????????{
????????????????????byte[]?arrMsg?=?new?byte[1024?*?1024?*?2];
????????????????????//接收?對(duì)應(yīng)?客戶端發(fā)來的消息
????????????????????int?length?=?sokMsg.Receive（arrMsg）;
????????????????????//將接收到的消息數(shù)組里真實(shí)消息轉(zhuǎn)成字符串
????????????????????string?strMsg?=?System.Text.Encoding.UTF8.GetString（arrMsg?0?length）;
????????????????????//通過委托?顯示消息到?窗體的文本框
????????????????????dgShowMsg（strMsg）;
????????????????}
????????????????catch?（Exception?ex）
????????????????{
????????????????????isRec?=?false;
????????????????????//從主窗體中?移除?下拉框中對(duì)應(yīng)的客戶端選擇項(xiàng)，同時(shí)?移除?集合中對(duì)應(yīng)的?ConnectionClient對(duì)象
????????????????????dgRemoveConnection（sokMsg.RemoteEndPoint.ToString（））;
????????????????}
????????????}
????????}
????????#endregion

????????#region?03向客戶端發(fā)送消息
????????///?

????????///?向客戶端發(fā)送消息
????????///?

????????///?
????????public?void?Send（string?strMsg）
????????{
????????????byte[]?arrMsg?=?System.Text.Encoding.UTF8.GetBytes（strMsg）;
????????????byte[]?arrMsgFinal?=?new?byte[arrMsg.Length?+?1];

????????????arrMsgFinal[0]?=?0;//設(shè)置?數(shù)據(jù)標(biāo)識(shí)位等于0，代表?發(fā)送的是?文字
????????????arrMsg.CopyTo（arrMsgFinal?1）;

????????????sokMsg.Send（arrMsgFinal）;
????????}
????????#endregion

????????#region?04向客戶端發(fā)送文件數(shù)據(jù)?+void?SendFile（string?strPath）
????????///?

????????///?04向客戶端發(fā)送文件數(shù)據(jù)
????????///?

????????///?文件路徑
????????public?void?SendFile（string?strPath）
????????{
????????????//通過文件流?讀取文件內(nèi)容
????????????using?（FileStream?fs?=?new?FileStream（strPath?FileMode.OpenOrCreate））
????????????{
????????????????byte[]?arrFile?=?new?byte[1024?*?1024?*?2];
????????????????//讀取文件內(nèi)容到字節(jié)數(shù)組，并?獲得?實(shí)際文件大小
????????????????int?length?=?fs.Read（arrFile?0?arrFile.Length）;
????????????????//定義一個(gè)?新數(shù)組，長度為文件實(shí)際長度?+1
????????????????byte[]?arrFileFina

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????59136??2012-06-25?01:07??C#UDP通信+文件傳輸\2000多商業(yè)程序?OA?程序下載?版權(quán)說明.txt

?????文件??????59136??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\2000多商業(yè)程序?OA?程序下載?版權(quán)說明.txt

?????文件??????17920??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\bin\Debug\BroadcastExample.exe

?????文件??????42496??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\bin\Debug\BroadcastExample.pdb

?????文件??????14328??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\bin\Debug\BroadcastExample.vshost.exe

?????文件????????490??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\bin\Debug\BroadcastExample.vshost.exe.manifest

?????文件???????3534??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\BroadcastExample.csproj

?????文件???????4623??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\ConnectionClient.cs

?????文件????????161??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\DGShowMsg.cs

?????文件??????18495??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Form1.cs

?????文件???????6662??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Form1.Designer.cs

?????文件???????5814??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Form1.resx

?????文件???????1502??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\BroadcastExample.csproj.FileListAbsolute.txt

?????文件???????2254??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.csproj.FileListAbsolute.txt

?????文件????????847??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.csproj.GenerateResource.Cache

?????文件??????17920??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.exe

?????文件????????180??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.Form1.resources

?????文件??????42496??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.pdb

?????文件????????180??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\BroadcastExample.Properties.Resources.resources

?????文件???????4608??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\obj\Debug\TempPE\Properties.Resources.Designer.cs.dll

?????文件????????491??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Program.cs

?????文件???????1204??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Properties\AssemblyInfo.cs

?????文件???????2856??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Properties\Resources.Designer.cs

?????文件???????5612??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Properties\Resources.resx

?????文件???????1114??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Properties\Settings.Designer.cs

?????文件????????249??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample\Properties\Settings.settings

?????文件????????938??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample.sln

????..A..H.?????18944??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\BroadcastExample.suo

?????文件????3543552??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\DevComponents.DotNetBar2.dll

?????文件???????1189??2012-06-25?01:07??C#UDP通信+文件傳輸\BroadcastExample\UpgradeLog.xml

............此處省略21個(gè)文件信息