ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / FeatureLayer Class / IsSubtypeLayer Property

IsSubtypeLayer Property
Gets whether the feature layer is a member of SubtypeGroupLayer.
Syntax
public bool IsSubtypeLayer {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.1 or higher.
See Also