Share Email Facebook Twitter LinkedIn CategoryNameMap.Clear Method Removes every category from the map, rendering it empty.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0) Syntax C# public virtual void Clear() See AlsoReferenceCategoryNameMap ClassAutodesk.Revit.DB Namespace