it s amazing. just run it and analysis that .
File list:
three button
...........\three button
...........\............\bin
...........\............\...\Debug
...........\............\...\.....\three button.exe
...........\............\...\.....\three button.pdb
...........\............\...\.....\three button.vshost.exe
...........\............\...\.....\three button.vshost.exe.manifest
...........\............\...\Release
...........\............\obj
...........\............\...\x86
...........\............\...\...\Debug
...........\............\...\...\.....\TempPE
...........\............\...\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
...........\............\...\...\.....\GenerateResource.read.1.tlog
...........\............\...\...\.....\GenerateResource.write.1.tlog
...........\............\...\...\.....\three button.csproj.FileListAbsolute.txt
...........\............\...\...\.....\three button.exe
...........\............\...\...\.....\three_button.Form1.resources
...........\............\...\...\.....\three_button.Properties.Resources.resources
...........\............\Properties
...........\............\..........\AssemblyInfo.cs
...........\............\..........\Resources.Designer.cs
...........\............\..........\Resources.resx
...........\............\..........\Settings.Designer.cs
...........\............\..........\Settings.settings
...........\............\Form1.cs
...........\............\Form1.Designer.cs
...........\............\Form1.resx
...........\............\Program.cs
...........\............\three button.csproj
...........\three button.sln
...........\three button.suo