LayoutFarm.Demo_SingleTextLine_With_Compartment.textSurfaceListener_PreviewArrowKeyDown C# (CSharp) Метод

        void textSurfaceListener_PreviewArrowKeyDown(object sender, Text.TextDomEventArgs e)
        {
            //update selection in list box
            switch (e.key)
            {
                case UIKeys.Down:
                    {
                        if (listView.SelectedIndex < listView.ItemCount - 1)
                        {
                            listView.SelectedIndex++;
                        }
                    }
                    break;
                case UIKeys.Up:
                    {
                        if (listView.SelectedIndex > 0)
                        {
                            listView.SelectedIndex--;
                        }
                    }
                    break;
            }
        }
        void textSurfaceListener_PreviewEnterKeyDown(object sender, Text.TextDomEventArgs e)