Share Email Facebook Twitter LinkedIn CategorySet.Clear Method Removes every item from the set, rendering it empty.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.1.0.0 (26.1.0.34) Syntax C# public virtual void Clear() See AlsoReferenceCategorySet ClassAutodesk.Revit.DB Namespace