ArcGIS Pro 2.7 API Reference Guide
Secondary Property (TOCMapPaneProviderPane)

ArcGIS.Desktop.Mapping Namespace > TOCMapPaneProviderPane Class : Secondary Property
Gets the secondary flag value. Returns true if the pane can be positioned as a secondary pane "under" a Map View.
Syntax
public override bool Secondary {get;}
Public Overrides ReadOnly Property Secondary As Boolean
Remarks
Use DockUnderMapView instead
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

TOCMapPaneProviderPane Class
TOCMapPaneProviderPane Members