piano
.....\piano.sln
.....\piano
.....\.....\app.config
.....\.....\bin
.....\.....\...\Debug
.....\.....\...\.....\piano.exe
.....\.....\...\.....\piano.pdb
.....\.....\...\.....\piano.vshost.exe
.....\.....\...\.....\piano.vshost.exe.manifest
.....\.....\...\Release
.....\.....\BlackKey.cs
.....\.....\DXUtil.cs
.....\.....\graphics.cs
.....\.....\obj
.....\.....\...\Debug
.....\.....\...\.....\piano.csproj.FileListAbsolute.txt
.....\.....\...\.....\piano.csproj.GenerateResource.Cache
.....\.....\...\.....\piano.exe
.....\.....\...\.....\piano.pdb
.....\.....\...\.....\piano.PianoForm.resources
.....\.....\...\.....\piano.Properties.Resources.resources
.....\.....\...\.....\Refactor
.....\.....\...\.....\ResolveAssemblyReference.cache
.....\.....\...\.....\TempPE
.....\.....\...\.....\......\Properties.Resources.Designer.cs.dll
.....\.....\...\Release
.....\.....\...\.......\piano.csproj.FileListAbsolute.txt
.....\.....\...\.......\piano.csproj.GenerateResource.Cache
.....\.....\...\.......\piano.PianoForm.resources
.....\.....\...\.......\piano.Properties.Resources.resources
.....\.....\...\.......\TempPE
.....\.....\...\.......\......\Properties.Resources.Designer.cs.dll
.....\.....\piano.csproj
.....\.....\piano.csproj.user
.....\.....\PianoForm.cs
.....\.....\PianoForm.resx
.....\.....\PianoKey.cs
.....\.....\Properties
.....\.....\..........\Resources.Designer.cs
.....\.....\..........\Resources.resx
.....\.....\Resources
.....\.....\.........\ding.wav
.....\.....\.........\images.jpg
.....\.....\.........\img.JPG
.....\.....\WhiteKey.cs