File list (Check if you may need any files):
ComboBoxTree\ComboBoxTree\Backup\ComboBoxTree.sln
............\............\......\ComboBoxTree.suo
............\............\......\Demo\ArrayToDataTable.cs
............\............\......\....\Demo.csproj
............\............\......\....\Form1.cs
............\............\......\....\Form1.designer.cs
............\............\......\....\Form1.resx
............\............\......\....\Program.cs
............\............\......\....\...perties\AssemblyInfo.cs
............\............\......\....\..........\Resources.Designer.cs
............\............\......\....\..........\Resources.resx
............\............\......\....\..........\Settings.Designer.cs
............\............\......\....\..........\Settings.settings
............\............\......\.ropDownPanel\ComBoxTree\ComboBoxTree.cs
............\............\......\.............\..........\DropDownNode.cs
............\............\......\.............\..........\DropDownTree.cs
............\............\......\.............\..ntrols\DropDownPanel.cs
............\............\......\.............\........\DropDownPanel.Designer.cs
............\............\......\.............\DropDownPanel.csproj
............\............\......\.............\Events\Events.cs
............\............\......\.............\Forms\DropDownForm.cs
............\............\......\.............\.....\DropDownForm.designer.cs
............\............\......\.............\.....\DropDownForm.resx
............\............\......\.............\Helper\DropDownMessageFilter.cs
............\............\......\.............\......\DropDownWindowHelper.cs
............\............\......\.............\Interfaces\IDropDownAware.cs
............\............\......\.............\..........\ILookupItem.cs
............\............\......\.............\Properties\AssemblyInfo.cs
............\............\......\.............\Unmanaged\UIApiCalls.cs
............\............\ComboBoxTree.sln
............\............\ComboBoxTree.suo
............\............\Demo\ArrayToDataTable.cs
............\............\....\bin\Release\Demo.exe
............\............\....\...\.......\Demo.pdb
............\............\....\...\.......\Demo.vshost.exe
............\............\....\...\.......\Demo.vshost.exe.manifest
............\............\....\Demo.csproj
............\............\....\Form1.cs
............\............\....\Form1.designer.cs
............\............\....\Form1.resx
............\............\....\obj\Release\Demo.csproj.FileListAbsolute.txt
............\............\....\...\.......\Demo.csproj.GenerateResource.Cache
............\............\....\...\.......\Demo.exe
............\............\....\...\.......\Demo.Form1.resources
............\............\....\...\.......\Demo.pdb
............\............\....\...\.......\Demo.Properties.Resources.resources
............\............\....\...\.......\ResolveAssemblyReference.cache
............\............\....\...\.......\TempPE\Properties.Resources.Designer.cs.dll
............\............\....\Program.cs
............\............\....\...perties\AssemblyInfo.cs
............\............\....\..........\Resources.Designer.cs
............\............\....\..........\Resources.resx
............\............\....\..........\Settings.Designer.cs
............\............\....\..........\Settings.settings
............\............\.ropDownPanel\ComBoxTree\ComboBoxTree.cs
............\............\.............\..........\DropDownNode.cs
............\............\.............\..........\DropDownTree.cs
............\............\.............\..........\DropDownTree.resx
............\............\.............\..ntrols\DropDownPanel.cs
............\............\.............\........\DropDownPanel.Designer.cs
............\............\.............\DropDownPanel.csproj
............\............\.............\Events\Events.cs
............\............\.............\Forms\DropDownForm.cs
............\............\.............\.....\DropDownForm.designer.cs
............\............\.............\.....\DropDownForm.res