ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework.Contracts Namespace / Gallery Class / CollectionView Property

CollectionView Property
InRibbonGallery's bounded ItemSource. This collection filters out the items whose value of IGalleryItem.IsGroupVisible is false.
Syntax
public ICollectionView CollectionView {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.5 or higher.
See Also