Revit 2025 API
Family |
Provides access to the double precision number of the given family parameter.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)
Syntax
public double? AsDouble( FamilyParameter familyParameter )
Public Function AsDouble ( familyParameter As FamilyParameter ) As Double?
public: Nullable<double> AsDouble( FamilyParameter^ familyParameter )
member AsDouble : familyParameter : FamilyParameter -> Nullable<float>
Parameters
- familyParameter FamilyParameter
Return Value
NullableDoubleThe double value contained in the parameter. Returns if the storage type of the input argument is not double type or this parameter has no value.

Exception | Condition |
---|---|
ArgumentNullException | Thrown when the input argument-"familyParameter"-is . |
ArgumentException | Thrown if the input argument-"familyParameter"-is invalid, |
See Also