ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework Namespace / NotificationItem Class / Message Property

Message Property (NotificationItem)
Gets the general message of the notification item.
Syntax
public string Message {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.1 or higher.
See Also