public DisplayUnitFormat GetElevationUnitFormat()

{
    var elev_unit = map.GetElevationUnitFormat();
    var line = $"{elev_unit.DisplayName}, {elev_unit.UnitCode}";
    System.Diagnostics.Debug.WriteLine(line);
}

{
    //Get the current elevation unit. If the map is not
    //a scene the default Project distance unit is returned
    //Note: Must be on the QueuedTask.Run()
    var elev_unit = map.GetElevationUnitFormat();

    //Format the view camera elevation
    var str = elev_unit.FormatValue(mapView.Camera.Z);

    System.Diagnostics.Debug.WriteLine($"Formatted elevation: {str}");
}