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

PointCount Property (Geometry)
Gets the number of points that comprise this geometry.
Syntax
public abstract int PointCount {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also