ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / PopupContent Class / MapMember Property

MapMember Property (PopupContent)
Gets or sets the MapMember associated with the pop-up. Can be null if the pop-up is not tied to a specific MapMember.
Syntax
public MapMember MapMember {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also