This class represents a MidPoint constraint node in the owning Assoc2dConstraintGroup. 

It can be applied between a point and a bounded line (not ray) or arc.

Autodesk.AutoCAD.DatabaseServices.ConstraintGroupNode
    Autodesk.AutoCAD.DatabaseServices.GeometricalConstraint
        Autodesk.AutoCAD.DatabaseServices.MidPointConstraint

Public Class MidPointConstraint
Inherits GeometricalConstraint

public class MidPointConstraint : GeometricalConstraint;