FamilyInstanceHostParameter Property

If the instance is hosted by a wall, this property returns the parameter value of the insertion point of the instance along the wall's location curve, as long as the family of the instance isn't work plane based.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

C++

Copy

public double HostParameter { get; }

Public ReadOnly Property HostParameter As Double
	Get

public:
property double HostParameter {
	double get ();
}

member HostParameter : float with get

Property Value

Double

Exceptions

Exception	Condition
InvalidOperationException	Only hosted instances whose family is not work plane based can support this functionality.
InvalidOperationException	Only hosted instances of type Wall or in-place elements of category OST_Walls can support this functionality.

Remarks

This works for instances with a host element that is of type Wall or is in the OST_Walls category only, including in-place ones.

Reference

FamilyInstance Class

Autodesk.Revit.DB Namespace