ComboBoxTree
............\ComboBoxTree
............\ComboBoxTree.sln
............\............\AssemblyInfo.cs
............\............\bin
............\............\...\Debug
............\............\...\.....\ComboBoxTree.xml
............\............\ComboBoxTree.cs
............\............\ComboBoxTree.csproj
............\............\ComboBoxTree.csproj.user
............\............\ComboBoxTree.key
............\............\ComboBoxTree.resx
............\............\Doc
............\............\...\ComboBoxTree.xml
............\TestApp
............\.......\App.ico
............\.......\AssemblyInfo.cs
............\.......\bin
............\.......\...\Debug
............\.......\...\.....\ComboBoxTree.dll
............\.......\...\.....\ComboBoxTree.xml
............\.......\...\.....\TestApp.exe
............\.......\Form1.cs
............\.......\Form1.resx
............\.......\TestApp.csproj
............\.......\TestApp.csproj.user