Share Email Facebook Twitter LinkedIn Parameter.HasValue Property Identifies if the parameter has an assigned value.Namespace: Autodesk.Revit.DBAssembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0) Syntax C# public bool HasValue { get; }Property ValueBoolean See AlsoReferenceParameter ClassAutodesk.Revit.DB Namespace