The easiest way to get the full, functional DLL is through NuGet: Install-Package FCTB .
In Visual Studio, right-click the Toolbox, select Choose Items , and browse to select the FastColoredTextBox.dll . Usage Example: FastColoredTextBox.dll
Supports built-in languages (CSharp, VB, HTML, XML, SQL, Lua) and custom highlighting. Code Folding: Allows collapsing/expanding code blocks. The easiest way to get the full, functional
To help you get started with the right version, are you using: (WinForms) NET 6/7+ ? right-click the Toolbox
Includes Undo/Redo, WordWrap, and Find/Replace. How to Use It (Implementation)
It is designed for Windows Forms. To use in WPF, you must use WindowsFormsHost .