微软为我们提供两个关于HTTP请求HttpWebRequest，HttpWebResponse对象，方便我们发送请求获取数据
资源文件列表
ConsoleApp2/.vs/ConsoleApp2/DesignTimeBuild/.dtbcache , 110
ConsoleApp2/.vs/ConsoleApp2/v16/.suo , 48128
ConsoleApp2/.vs/ConsoleApp2/v16/Server/sqlite3/db.lock , 0
ConsoleApp2/.vs/ConsoleApp2/v16/Server/sqlite3/storage.ide , 1781760
ConsoleApp2/App.config , 189
ConsoleApp2/bin/Debug/2019122812.html , 20441
ConsoleApp2/bin/Debug/20191228121431.html , 2297
ConsoleApp2/bin/Debug/20191228121434.html , 2297
ConsoleApp2/bin/Debug/ConsoleApp2.exe , 9216
ConsoleApp2/bin/Debug/ConsoleApp2.exe.config , 189
ConsoleApp2/bin/Debug/ConsoleApp2.pdb , 24064
ConsoleApp2/bin/Debug/网页爬虫.dll , 13312
ConsoleApp2/bin/Debug/网页爬虫.pdb , 34304
ConsoleApp2/ConsoleApp2.csproj , 2595
ConsoleApp2/ConsoleApp2.sln , 1126
ConsoleApp2/obj/Debug/ConsoleApp2.csproj.CopyComplete , 0
ConsoleApp2/obj/Debug/ConsoleApp2.csproj.CoreCompileInputs.cache , 42
ConsoleApp2/obj/Debug/ConsoleApp2.csproj.FileListAbsolute.txt , 1560
ConsoleApp2/obj/Debug/ConsoleApp2.csprojAssemblyReference.cache , 4703
ConsoleApp2/obj/Debug/ConsoleApp2.exe , 9216
ConsoleApp2/obj/Debug/ConsoleApp2.pdb , 24064
ConsoleApp2/obj/Debug/DesignTimeResolveAssemblyReferencesInput.cache , 6786
ConsoleApp2/obj/Debug/TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs , 0
ConsoleApp2/obj/Debug/TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs , 0
ConsoleApp2/obj/Debug/TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs , 0
ConsoleApp2/Program.cs , 5658
ConsoleApp2/Properties/AssemblyInfo.cs , 1334