

A Multipart is based upon the parent Geometry class. The Geometry class is immutable which means that you can not change its shape once it is created. If you need to modify a Multipart once it has been created, use the MultipartBuilderEx class instead. The MultipartBuilderEx.ToGeometry method will provide you with the base Geometry object.
System.Object
   ArcGIS.Core.Geometry.Geometry
      ArcGIS.Core.Geometry.Multipart
         ArcGIS.Core.Geometry.Polygon
         ArcGIS.Core.Geometry.Polyline
Target Platforms: Windows 11, Windows 10