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: 21.0.0.0 (21.1.1.109)

Syntax

C#
public double HostParameter { get; }
Visual Basic
Public ReadOnly Property HostParameter As Double
	Get
Visual C++
public:
property double HostParameter {
	double get ();
}

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.

Exceptions

ExceptionCondition
Autodesk.Revit.Exceptions..::..InvalidOperationException Only hosted instances whose family is not work plane based can support this functionality.
Autodesk.Revit.Exceptions..::..InvalidOperationException Only hosted instances of type Wall or in-place elements of category OST_Walls can support this functionality.

See Also