SilverlightMappingToolBasic.UI.SuperGraph.View.SuperGraphControl.OnKeyDown C# (CSharp) Method

        private void OnKeyDown(object sender, KeyEventArgs e)
        {
            if (e.Key == Key.Down || e.Key == Key.Up || e.Key == Key.Left || e.Key == Key.Right)
            {
                double x = 0, y = 0;
                switch (e.Key)
                {
                    case Key.Down:
                        y = -10/Zoom;
                        break;
                    case Key.Up:
                        y = 10/Zoom;
                        break;
                    case Key.Left:
                        x = 10/Zoom;
                        break;
                    case Key.Right:
                        x = -10/Zoom;
                        break;
                }
                MoveMap(x, y);
            }
            else
            {
                if (App.UserStyle == UserStyle.Reader) return;
                switch (e.Key)
                {
                    case Key.Ctrl:
                        e.Handled = true;
                        break;
                    case Key.Shift:
                        e.Handled = true;
                        break;
                }
            }
        }