Share Email Facebook Twitter LinkedIn ElementDesignOptionFilter.DesignOptionId Property The design option id. Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0) Syntax C# public ElementId DesignOptionId { get; }Property ValueElementId See AlsoReferenceElementDesignOptionFilter ClassAutodesk.Revit.DB Namespace