除了 WebClient 我们还可以使用一组 WindowsAPI 来完成下载任务。这就是 Windows Internet，简称 WinINet
资源文件列表
WinInetDemo3.sln , 1002
WinInetDemo/bin/Debug/log.txt , 96
WinInetDemo/bin/Debug/WinInetDemo3.exe , 22016
WinInetDemo/bin/Debug/WinInetDemo3.pdb , 56832
WinInetDemo/bin/Debug/WinInetDemo3.vshost.exe , 22688
WinInetDemo/bin/Debug/WinInetDemo3.vshost.exe.manifest , 490
WinInetDemo/DownloadManager.cs , 5541
WinInetDemo/DownloadProcessForm.cs , 3342
WinInetDemo/DownloadProcessForm.Designer.cs , 3848
WinInetDemo/DownloadProcessForm.resx , 5817
WinInetDemo/Form1.cs , 547
WinInetDemo/Form1.Designer.cs , 2127
WinInetDemo/Form1.resx , 5817
WinInetDemo/Log.cs , 1197
WinInetDemo/MyWinInet.cs , 15248
WinInetDemo/NativeMethods.cs , 1706
WinInetDemo/obj/Debug/DesignTimeResolveAssemblyReferences.cache , 864
WinInetDemo/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6896
WinInetDemo/obj/Debug/WinInetDemo3.csproj.FileListAbsolute.txt , 871
WinInetDemo/obj/Debug/WinInetDemo3.csproj.GenerateResource.Cache , 1084
WinInetDemo/obj/Debug/WinInetDemo3.csprojResolveAssemblyReference.cache , 2210
WinInetDemo/obj/Debug/WinInetDemo3.DownloadProcessForm.resources , 180
WinInetDemo/obj/Debug/WinInetDemo3.exe , 22016
WinInetDemo/obj/Debug/WinInetDemo3.Form1.resources , 180
WinInetDemo/obj/Debug/WinInetDemo3.pdb , 56832
WinInetDemo/obj/Debug/WinInetDemo3.Properties.Resources.resources , 180
WinInetDemo/Program.cs , 504
WinInetDemo/Properties/AssemblyInfo.cs , 1436
WinInetDemo/Properties/Resources.Designer.cs , 2854
WinInetDemo/Properties/Resources.resx , 5612
WinInetDemo/Properties/Settings.Designer.cs , 1099
WinInetDemo/Properties/Settings.settings , 249
WinInetDemo/Util.cs , 1144
WinInetDemo/WinInetDemo3.csproj , 4311