This program achieved comboBox s items shows by treeview,so you can select it deploy

ComboBoxTree\ComboBoxTree.sln
............\ComboBoxTree.suo
............\Demo\ArrayToDataTable.cs
............\....\bin\Release\Demo.exe
............\....\...\.......\DropDownPanel.dll
............\....\...\.......\Demo.vshost.exe.manifest
............\....\...\.......\Demo.vshost.exe
............\....\...\.......\DropDownPanel.pdb
............\....\...\.......\Demo.pdb
............\....\Demo.csproj
............\....\Form1.cs
............\....\Form1.designer.cs
............\....\Form1.resx
............\....\Program.cs
............\....\...perties\AssemblyInfo.cs
............\....\..........\Resources.Designer.cs
............\....\..........\Resources.resx
............\....\..........\Settings.Designer.cs
............\....\..........\Settings.settings
............\....\obj\Release\TempPE\Properties.Resources.Designer.cs.dll
............\....\...\.......\ResolveAssemblyReference.cache
............\....\...\.......\Demo.Form1.resources
............\....\...\.......\Demo.Properties.Resources.resources
............\....\...\.......\Demo.csproj.GenerateResource.Cache
............\....\...\.......\Demo.pdb
............\....\...\.......\Demo.exe
............\....\...\.......\Demo.csproj.FileListAbsolute.txt
............\.ropDownPanel\bin\Release\DropDownPanel.dll
............\.............\...\.......\DropDownPanel.pdb
............\.............\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
............\.............\obj\Release\DropDownPanel.csproj.GenerateResource.Cache
............\.............\...\.......\DropDownPanel.pdb
............\.............\...\.......\DropDownPanel.dll
............\.............\...\.......\DropDownPanel.csproj.FileListAbsolute.txt
............\UpgradeLog.XML
............\_UpgradeReport_Files\UpgradeReport.css
............\....................\UpgradeReport_Minus.gif
............\....................\UpgradeReport_Plus.gif
............\....................\UpgradeReport.xslt
............\Demo\obj\Debug\TempPE
............\....\...\Release\TempPE
............\.ropDownPanel\obj\Debug\TempPE
............\.............\...\Release\TempPE
............\.emo\bin\Release
............\....\...\Debug
............\....\obj\Debug
............\....\...\Release
............\.ropDownPanel\bin\Release
............\.............\...\Debug
............\.............\obj\Debug
............\.............\...\Release
............\.emo\bin
............\....\Properties
............\....\obj
............\.ropDownPanel\bin
............\.............\ComBoxTree
............\.............\Controls
............\.............\Events
............\.............\Forms
............\.............\Helper
............\.............\Interfaces
............\.............\Properties
............\.............\Unmanaged
............\.............\obj
............\Demo
............\DropDownPanel
............\_UpgradeReport_Files
ComboBoxTree

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