This class represents a distance constraint node in the owning Assoc2dConstraintGroup. It can be applied between two constrained geometries (normally two points).

Autodesk.AutoCAD.DatabaseServices.ConstraintGroupNode
    Autodesk.AutoCAD.DatabaseServices.GeometricalConstraint
        Autodesk.AutoCAD.DatabaseServices.ExplicitConstraint
            Autodesk.AutoCAD.DatabaseServices.DistanceConstraint

Public Class DistanceConstraint
Inherits ExplicitConstraint

public class DistanceConstraint : ExplicitConstraint;