private void ShowCustomScrollAnnotation(DevExpress.Xpf.Grid.ScrollBarCustomRowAnnotationEventArgs e, SolidColorBrush brush)
 {
     e.ScrollBarAnnotationInfo = new DevExpress.Xpf.Grid.ScrollBarAnnotationInfo()
     {
         Alignment = DevExpress.Xpf.Grid.ScrollBarAnnotationAlignment.Right,
         Brush     = brush,
         MinHeight = 3,
         Width     = 10
     };
 }
        private void MyScrollBarCustomRowAnnotationEventHandler(object sender, DevExpress.Xpf.Grid.ScrollBarCustomRowAnnotationEventArgs e)
        {
            TestData data = e.Row as TestData;

            if (data == null)
            {
                return;
            }
            int number = data.Number;

            if (number > 10 && number < 15)
            {
                ShowCustomScrollAnnotation(e, Brushes.LightCoral);
            }
            if (number > 2 && number < 4)
            {
                ShowCustomScrollAnnotation(e, Brushes.Green);
            }
        }