Indicates if this family parameter has an assigned value or not.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)

Syntax

C#
`public bool HasValue( FamilyParameter familyParameter )`

Visual Basic
`Public Function HasValue ( _ familyParameter As FamilyParameter _ ) As Boolean`

Visual C++
`public: bool HasValue( FamilyParameter^ familyParameter )`

Exceptions

Exception	Condition
Autodesk.Revit.ExceptionsArgumentNullException	Thrown when the input argument-"familyParameter"-is a null reference (Nothing in Visual Basic).
Autodesk.Revit.ExceptionsArgumentException	Thrown if the input argument-"familyParameter"-is invalid.