ArcGIS Pro 2.7 API Reference Guide
Thumbnail Property (IGalleryItem)

ArcGIS.Desktop.Framework.Contracts Namespace > IGalleryItem Interface : Thumbnail Property
Gets or sets the gallery item's icon in the gallery customization dialog.
Syntax
ImageSource Thumbnail {get; set;}
Property Thumbnail As ImageSource
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

IGalleryItem Interface
IGalleryItem Members