File list (Check if you may need any files):
TreeDataStructure
.................\frmComplexTree.cs
.................\frmComplexTree.Designer.cs
.................\frmComplexTree.resx
.................\frmMenu.cs
.................\frmMenu.Designer.cs
.................\frmMenu.resx
.................\frmSimpleTree.cs
.................\frmSimpleTree.Designer.cs
.................\frmSimpleTree.resx
.................\obj
.................\...\Debug
.................\...\.....\Refactor
.................\...\.....\ResolveAssemblyReference.cache
.................\...\.....\TempPE
.................\...\.....\TreeDataStructure.csproj.FileListAbsolute.txt
.................\...\.....\TreeDataStructure.csproj.GenerateResource.Cache
.................\...\.....\TreeDataStructure.exe
.................\...\.....\TreeDataStructure.frmComplexTree.resources
.................\...\.....\TreeDataStructure.frmMenu.resources
.................\...\.....\TreeDataStructure.frmSimpleTree.resources
.................\...\.....\TreeDataStructure.pdb
.................\...\.....\TreeDataStructure.Properties.Resources.resources
.................\...\TreeDataStructure.csproj.FileList.txt
.................\Program.cs
.................\Properties
.................\..........\AssemblyInfo.cs
.................\..........\Resources.Designer.cs
.................\..........\Resources.resx
.................\..........\Settings.Designer.cs
.................\..........\Settings.settings
.................\Task.cs
.................\Tree
.................\....\ComplexSubtree.cs
.................\....\ComplexTree.cs
.................\....\ComplexTreeNode.cs
.................\....\ComplexTreeNodeList.cs
.................\....\Enums.cs
.................\....\SimpleSubtree.cs
.................\....\SimpleTree.cs
.................\....\SimpleTreeNode.cs
.................\....\SimpleTreeNodeList.cs
.................\TreeDataStructure.csproj
.................\TreeDataStructure.csproj.bak
.................\TreeDataStructure.sln
.................\TreeDataStructure.sln.bak