Set the formula of a family parameter.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.4.0.0 (26.4.0.0)
Syntax
C#
public void SetFormula( FamilyParameter familyParameter, string formula )
Parameters
- familyParameter FamilyParameter
- The family parameter.
- formula String
- The formula string, input null to clean the formula of the parameter.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | Thrown when the input argument-"familyParameter"-is null. |
| InvalidOperationException | Thrown when there is no valid family type, or the parameter cannot be assigned a formula, or the operation make a circular chain of references among the formulas. |