ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / SpatialReference Class / IsUnknown Property
Version

IsUnknown Property (SpatialReference)
Gets if this is the unknown coordinate system.
Syntax
public bool IsUnknown {get;}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also