This .NET class wraps the AcDbLoftedSurface ObjectARX class. 

This class represents a lofted surface entity. It provides methods to create and manipulate ASM surfaces.

Autodesk.AutoCAD.DatabaseServices.DBObject
    Autodesk.AutoCAD.DatabaseServices.Entity
        Autodesk.AutoCAD.DatabaseServices.Surface
            Autodesk.AutoCAD.DatabaseServices.LoftedSurface

Public Class LoftedSurface
Inherits Surface

public class LoftedSurface : Surface;

LoftOptions