ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / PopupContent Class / IDString Property
Version

IDString Property
Gets or sets a "generic string feature id" associated with the pop-up. Can be empty if the pop-up is not associated with a feature using a string.
Syntax
public string IDString {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also