Namespace: Autodesk.Revit.DB Class: FamilyManager

FamilyManager.SetFormula

Method

Description:
Set the formula of a family parameter.

Syntax

public void SetFormula(
	FamilyParameter familyParameter,
	string formula
)

Public Sub SetFormula ( 
	familyParameter As FamilyParameter,
	formula As String
)

public:
void SetFormula(
	FamilyParameter^ familyParameter, 
	String^ formula
)

member SetFormula : 
        familyParameter : FamilyParameter * 
        formula : string -> unit

Parameters

Parameter	Type	Description
familyParameter	FamilyParameter	The family parameter.
formula	String	The formula string, input <span class="keyword"><span data-languagespecifictext="cpp=nullptr\|vb=Nothing\|nu=null" id="LSTF9248395_1"></span></span> to clean the formula of the parameter.

Return Value

Exceptions

Exception	Condition
ArgumentNullException	Thrown when the input argument-"familyParameter"-is.
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.