ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Framework.Contracts Namespace / Pane Class / ContentID Property

ContentID Property
Allows derived classes to provide a unique identifier for the Pane. The DAML ID is returned by default.
Syntax
public virtual string ContentID {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also