static void MapCrosshair(RadChartHandler handler, IRadChart view)
        {
            handler.DetachEvents();

            MapCrosshairSettings(handler, view.Crosshair);

            handler.AttachEvents();
        }
 static void MapCrosshairSettings(RadChartHandler handler, ICrosshairSettings settings)
 {
     handler.NativeView?.SetTextColor(settings.TextColor.ToNative());
 }
 static void MapMainColor(RadChartHandler handler, IRadChart view)
 {
     handler.NativeView?.SetBackgroundColor(view.MainColor.ToNative());
 }