ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework.Contracts Namespace / GalleryItem Class / Thumbnail Property

Thumbnail Property (GalleryItem)
Gets or sets the associated thumbnail.
Syntax
public ImageSource Thumbnail {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also