ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / ProximityResult Class / PointIndex Property

PointIndex Property
Gets the index of the point that was found. Only relevant if calling GeometryEngine.NearestVertex, otherwise point index is null.
Syntax
public Nullable<int> PointIndex {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also