C#　HTTP file download from iis server

DownloadUpload\App.xaml
..............\App.xaml.cs
..............\bin\Debug\Download.exe
..............\...\.....\Download.pdb
..............\...\.....\Download.vshost.exe
..............\...\.....\Download.vshost.exe.manifest
..............\...\.....\WpfApplicationTest.exe
..............\...\.....\WpfApplicationTest.pdb
..............\Download.csproj
..............\Download.sln
..............\MainWindow.xaml
..............\MainWindow.xaml.cs
..............\obj\x86\Debug\App.g.cs
..............\...\...\.....\App.g.i.cs
..............\...\...\.....\DesignTimeResolveAssemblyReferences.cache
..............\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
..............\...\...\.....\Download.csproj.FileListAbsolute.txt
..............\...\...\.....\Download.exe
..............\...\...\.....\Download.g.resources
..............\...\...\.....\Download.pdb
..............\...\...\.....\Download.Properties.Resources.resources
..............\...\...\.....\Download_MarkupCompile.cache
..............\...\...\.....\Download_MarkupCompile.i.cache
..............\...\...\.....\GenerateResource.read.1.tlog
..............\...\...\.....\GenerateResource.write.1.tlog
..............\...\...\.....\MainWindow.baml
..............\...\...\.....\MainWindow.g.cs
..............\...\...\.....\MainWindow.g.i.cs
..............\...\...\.....\ResolveAssemblyReference.cache
..............\...\...\.....\TempPE\Properties.Resources.Designer.cs.dll
..............\Properties\AssemblyInfo.cs
..............\..........\Resources.Designer.cs
..............\..........\Resources.resx
..............\..........\Settings.Designer.cs
..............\..........\Settings.settings
..............\obj\x86\Debug\TempPE
..............\...\...\Debug
..............\bin\Debug
..............\obj\x86
..............\bin
..............\obj
..............\Properties
DownloadUpload

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