using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Diagnostics;
using?System.IO;
using?System.Linq;
using?System.Net;
using?System.Text;

namespace?WebClientDemo
{
????internal?class?DownloadManager
????{
????????private?Stopwatch?_downloadStopWatch?=?null;
????????private?int?_currentDownloadTotalBytes?=?0;
????????private?int?_currentDownloadBytesSinceStopWatch?=?0;
????????private?bool?_cancelDownload?=?false;
????????private?BackgroundWorker?_bgWorker?=?null;
????????private?static?readonly?int?BufferSize?=?32768;
????????/*****************請讓用戶來設置這些信息*******************/
????????private?static?string?UserProxyAddress?=?““;
????????private?static?string?ProxyUserName?=?““;
????????private?static?string?ProxyUserPasswd?=?““;
?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-05-30?10:06??bin\
?????目錄???????????0??2017-05-30?10:08??bin\Debug\
?????文件???????18432??2017-05-30?10:07??bin\Debug\WebClientDemo.exe
?????文件???????46592??2017-05-30?10:07??bin\Debug\WebClientDemo.pdb
?????文件???????22688??2017-05-30?10:07??bin\Debug\WebClientDemo.vshost.exe
?????文件?????????490??2016-07-16?19:44??bin\Debug\WebClientDemo.vshost.exe.manifest
?????文件????????8232??2016-04-10?14:48??DownloadManager.cs
?????文件????????3261??2016-04-10?14:47??DownloadProcessForm.cs
?????文件????????3850??2016-04-10?14:21??DownloadProcessForm.Designer.cs
?????文件????????5817??2016-04-10?14:21??DownloadProcessForm.resx
?????文件?????????548??2016-03-28?11:49??Form1.cs
?????文件????????2131??2016-03-28?11:49??Form1.Designer.cs
?????文件????????5817??2016-03-28?11:49??Form1.resx
?????文件????????1273??2016-04-10?14:39??Log.cs
?????文件????????4842??2016-04-10?11:58??MyWebClient.cs
?????目錄???????????0??2017-05-30?10:06??obj\
?????目錄???????????0??2017-05-30?10:07??obj\Debug\
?????文件????????6908??2017-05-30?10:06??obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????目錄???????????0??2017-05-30?10:06??obj\Debug\TempPE\
?????文件?????????916??2017-05-30?10:07??obj\Debug\WebClientDemo.csproj.FileListAbsolute.txt
?????文件????????1084??2017-05-30?10:07??obj\Debug\WebClientDemo.csproj.GenerateResource.Cache
?????文件????????2210??2017-05-30?10:07??obj\Debug\WebClientDemo.csprojResolveAssemblyReference.cache
?????文件?????????180??2017-05-30?10:07??obj\Debug\WebClientDemo.DownloadProcessForm.resources
?????文件???????18432??2017-05-30?10:07??obj\Debug\WebClientDemo.exe
?????文件?????????180??2017-05-30?10:07??obj\Debug\WebClientDemo.Form1.resources
?????文件???????46592??2017-05-30?10:07??obj\Debug\WebClientDemo.pdb
?????文件?????????180??2017-05-30?10:07??obj\Debug\WebClientDemo.Properties.Resources.resources
?????文件?????????505??2016-03-28?11:06??Program.cs
?????目錄???????????0??2016-04-10?14:51??Properties\
?????文件????????1438??2016-03-28?11:06??Properties\AssemblyInfo.cs
?????文件????????2856??2016-03-28?11:06??Properties\Resources.Designer.cs
............此處省略6個文件信息