File list (Check if you may need any files):
richtextbox\richtextbox.sln
...........\richtextbox.v11.suo
...........\WindowsFormsApplication1\App.config
...........\........................\bin\Debug\WindowsFormsApplication1.exe
...........\........................\...\.....\WindowsFormsApplication1.exe.config
...........\........................\...\.....\WindowsFormsApplication1.pdb
...........\........................\...\.....\WindowsFormsApplication1.vshost.exe
...........\........................\...\.....\WindowsFormsApplication1.vshost.exe.config
...........\........................\...\.....\WindowsFormsApplication1.vshost.exe.manifest
...........\........................\Form1.cs
...........\........................\Form1.Designer.cs
...........\........................\Form1.resx
...........\........................\obj\Debug\DesignTimeResolveAssemblyReferences.cache
...........\........................\...\.....\DesignTimeResolveAssemblyReferencesInput.cache
...........\........................\...\.....\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
...........\........................\...\.....\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
...........\........................\...\.....\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
...........\........................\...\.....\WindowsFormsApplication1.csproj.FileListAbsolute.txt
...........\........................\...\.....\WindowsFormsApplication1.csproj.GenerateResource.Cache
...........\........................\...\.....\WindowsFormsApplication1.csprojResolveAssemblyReference.cache
...........\........................\...\.....\WindowsFormsApplication1.exe
...........\........................\...\.....\WindowsFormsApplication1.Form1.resources
...........\........................\...\.....\WindowsFormsApplication1.pdb
...........\........................\...\.....\WindowsFormsApplication1.Properties.Resources.resources
...........\........................\Program.cs
...........\........................\...perties\AssemblyInfo.cs
...........\........................\..........\Resources.Designer.cs
...........\........................\..........\Resources.resx
...........\........................\..........\Settings.Designer.cs
...........\........................\..........\Settings.settings
...........\........................\WindowsFormsApplication1.csproj
...........\........................\obj\Debug\TempPE
...........\........................\bin\Debug
...........\........................\obj\Debug
...........\........................\bin
...........\........................\obj
...........\........................\Properties
...........\WindowsFormsApplication1
richtextbox