ArcGIS Pro 2.6 API Reference Guide
LinkMode Property
Example 

ArcGIS.Desktop.Mapping Namespace > MapView Class : LinkMode Property
Gets or sets the method used to link views.
Syntax
public static LinkMode LinkMode {get; set;}
Public Shared Property LinkMode As LinkMode
Exceptions
ExceptionDescription
Scale can only be set in combination with Center.
Remarks
View linking is a navigation experience and can be used for multiple maps, scenes, or a mix of these 2D and 3D views. When you enable view linking all views will update their extents to match depending on the link mode that is selected. Currently the link mode Scale can only be used in combination with Center. Center can be used on its own or in combination with Scale.
Example
Set the View Linking mode to Center and Scale.
public void EnableViewLinking()
{
  //Get the active map view.
  var mapView = MapView.Active;
  if (mapView == null)
    return;

  //Set the view linking mode to Center and Scale.
  MapView.LinkMode = LinkMode.Center | LinkMode.Scale;
}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 7

See Also

Reference

MapView Class
MapView Members