The GeoCoordinate class represents a coordinate reference system (CRS) definition. A CRS is also being referred to as a spatial reference system (SRS). This is the wrapper class for the AcDbGeoCoordinateSystem class.

Autodesk.AutoCAD.DatabaseServices.GeoCoordinateSystem

Public Class GeoCoordinateSystem
Inherits DisposableWrapper

public class GeoCoordinateSystem : DisposableWrapper;