ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.Geometry Namespace / Multipart Class / Length3D Property

Length3D Property (Multipart)
Gets the 3D length of this instance.
Syntax
public virtual double Length3D {get;}
Exceptions
ExceptionDescription
The geometry is not Z-Aware.
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also