ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / Coordinate3D Structure / Z Property

Z Property (Coordinate3D)
Gets or sets the Z-component.
Syntax
public double Z {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 3.0 or higher.
See Also