ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework Namespace / PropertySheet Class / IsVisible Property

IsVisible Property (PropertySheet)
Gets boolean value of true if any property sheet is currently visible.
Syntax
public static bool IsVisible {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also