91av视频/亚洲h视频/操亚洲美女/外国一级黄色毛片 - 国产三级三级三级三级

資源簡介

注意：

在斷點續(xù)傳的過程中，我們以 byte 為單位下載、合并文件，如果整個過程中稍有沒有處理好的異常，可能最后得到的文件就和源文件不太一樣。因此最好是能夠?qū)ο螺d好的文件進行一次校驗。可這也是最難、最不容易實現(xiàn)的。因為它需要服務(wù)器端的支持，比如服務(wù)器端在提供一個可下載文件的同時提供該文件的 MD5 hash。當(dāng)然，如果服務(wù)器端也是我們自己創(chuàng)建的，我們就可以去實現(xiàn)它

資源截圖

代碼片段和文件信息 

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?BreakpointResume
{
????internal?class?DownloadManager
????{
????????private?Stopwatch?_downloadStopWatch?=?null;
????????private?bool?_cancelDownload?=?false;
????????private?BackgroundWorker?_bgWorker?=?null;
????????private?static?readonly?int?BufferSize?=?32768;

????????public?DownloadManager（BackgroundWorker?bgWorker）
????????{
????????????_bgWorker?=?bgWorker;
????????????_downloadStopWatch?=?new?Stopwatch（）;
????????}

????????public?bool?DownloadFile（string?url?string?fileName）
????????{
????????????bool?isDownloadSuccessfully?=?false;
????????????try
????????????{
???

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????4235??2016-04-29?15:07??BreakpointResume\BreakpointResume.csproj
?????文件????????1000??2016-05-28?15:04??BreakpointResume\BreakpointResume.sln
?????文件????????8654??2016-05-28?15:08??BreakpointResume\DownloadManager.cs
?????文件????????3258??2016-05-28?17:25??BreakpointResume\DownloadProcessForm.cs
?????文件????????3853??2016-04-29?15:30??BreakpointResume\DownloadProcessForm.Designer.cs
?????文件????????5817??2016-04-29?15:30??BreakpointResume\DownloadProcessForm.resx
?????文件?????????551??2016-04-29?15:18??BreakpointResume\Form1.cs
?????文件????????2130??2016-04-29?15:01??BreakpointResume\Form1.Designer.cs
?????文件????????5817??2016-04-29?15:01??BreakpointResume\Form1.resx
?????文件????????1276??2016-04-29?15:07??BreakpointResume\Log.cs
?????文件?????????508??2016-04-29?14:58??BreakpointResume\Program.cs
?????目錄???????????0??2016-05-28?14:22??BreakpointResume\Properties\
?????文件????????1444??2016-04-29?14:58??BreakpointResume\Properties\AssemblyInfo.cs
?????文件????????2862??2016-04-29?14:58??BreakpointResume\Properties\Resources.Designer.cs
?????文件????????5612??2016-04-29?14:58??BreakpointResume\Properties\Resources.resx
?????文件????????1103??2016-04-29?14:58??BreakpointResume\Properties\Settings.Designer.cs
?????文件?????????249??2016-04-29?14:58??BreakpointResume\Properties\Settings.settings
?????文件????????1223??2016-04-29?15:07??BreakpointResume\Util.cs

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