M

FamilyType.HasValue

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

public bool HasValue(
	FamilyParameter familyParameter
)

Public Function HasValue ( _
	familyParameter As FamilyParameter _
) As Boolean

public:
bool HasValue(
	FamilyParameter^ familyParameter
)

Return Value bool

Autodesk.Revit.Exceptions.ArgumentNullException

Thrown when the input argument-"familyParameter"-isnullNothingnullptra null reference (Nothingin Visual Basic).
Autodesk.Revit.Exceptions.ArgumentException

Thrown if the input argument-"familyParameter"-is invalid.