Share Email Facebook Twitter LinkedIn Category.IsValid Property Indicates if the Category is valid or not.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.2.0.0 (26.2.0.0) Syntax C# public bool IsValid { get; }Property ValueBoolean RemarksA valid Category is one which is present in the Document's Categories. See AlsoReferenceCategory ClassAutodesk.Revit.DB Namespace