ArcGIS Pro 2.8 API Reference Guide
IArcGISSignOn Interface
Members 

ArcGIS.Core.SystemCore Namespace : IArcGISSignOn Interface
For use with CoreHost applications that need to authenticate with portal or arcgis online.
Syntax
public interface IArcGISSignOn 
Public Interface IArcGISSignOn 
Remarks
Refer to ArcGISSignOn for further details
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

IArcGISSignOn Members
ArcGIS.Core.SystemCore Namespace