ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMLinkChartRelationship Class / SourceEntityId Property

SourceEntityId Property
Gets or sets the source entity id for the relationship.
Syntax
public string SourceEntityId {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.6 or higher.
See Also