

{
var animation = mapView.Map.Animation;
var layerTrack = animation.Tracks.OfType<LayerTrack>().First(); //There will always be only 1 LayerTrack in the animation.
layerTrack.CreateKeyframe(layer, atTime, true, transparency, AnimationTransition.Linear);
}
System.Object
ArcGIS.Desktop.Mapping.Track
ArcGIS.Desktop.Mapping.LayerTrack
Target Platforms: Windows 11 Home, Pro, Enterprise (64 bit)