ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Desktop.Reports Namespace / Report Class / DataSource Property

DataSource Property (Report)
Gets the data source of the report.
Syntax
public ReportDataSource DataSource {get;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.4 or higher.
See Also