ArcGIS Pro 3.1 API Reference Guide
ArcGIS.Core.Geometry Namespace / ProjectionTransformation Class / InputSpatialReference Property
Version

InputSpatialReference Property (ProjectionTransformation)
Gets the input spatial reference.
Syntax
public SpatialReference InputSpatialReference {get;}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.0 or higher.
See Also