c# 100 cases, the first chapter, section V of the examples, you can look at the following

Packet : 43680509fifth.rar filelist
第5例\testBoxingApp\App.ico
第5例\testBoxingApp\AssemblyInfo.cs
第5例\testBoxingApp\Class1.cs
第5例\testBoxingApp\testBoxingApp.csproj
第5例\testBoxingApp\testBoxingApp.csproj.user
第5例\testBoxingApp\testBoxingApp.sln
第5例\testBoxingApp\testBoxingApp.suo
第5例\testBoxingApp1.jpg
第5例\testBoxingApp\bin\Debug
第5例\testBoxingApp\obj\Debug
第5例\testBoxingApp\bin
第5例\testBoxingApp\obj
第5例\testBoxingApp
第5例

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