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SetFormula Method

Set the formula of a family parameter.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0)

Syntax

C# 
public void SetFormula(
	FamilyParameter familyParameter,
	string formula
)
Visual Basic 
Public Sub SetFormula ( _
	familyParameter As FamilyParameter, _
	formula As String _
)
Visual C++ 
public:
void SetFormula(
	FamilyParameter^ familyParameter, 
	String^ formula
)

Parameters

familyParameter
Type: Autodesk.Revit.DB FamilyParameter
The family parameter.
formula
Type: System String
The formula string, input a null reference ( Nothing in Visual Basic) to clean the formula of the parameter.

Exceptions

Exception Condition
Autodesk.Revit.Exceptions ArgumentNullException Thrown when the input argument-"familyParameter"-is a null reference ( Nothing in Visual Basic) .
Autodesk.Revit.Exceptions 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.

See Also