ArcGIS Pro 2.7 API Reference Guide
ILayoutElementContainer Interface
Members 

ArcGIS.Desktop.Layouts Namespace : ILayoutElementContainer Interface
Depricated. Use IElementContainer instead.
Syntax
public interface ILayoutElementContainer 
Public Interface ILayoutElementContainer 
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

ILayoutElementContainer Members
ArcGIS.Desktop.Layouts Namespace