ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Editing Namespace / RelationshipDescription Class / RelationshipClass Property

RelationshipClass Property (RelationshipDescription)
Gets the RelationshipClass representing an association between two tables in a geodatabase.
Syntax
public RelationshipClass RelationshipClass {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.5 or higher.
See Also