ImageViewerRubberBandEventArgs Class

public sealed class ImageViewerRubberBandEventArgs : ~Remove~ 

[TestMethod]
public void ImageViewerRubberBandInteractiveModeExample()
{
   // Set rubber band as the default interactive mode
   ImageViewerRubberBandInteractiveMode rubberBandMode = new ImageViewerRubberBandInteractiveMode();
   // Customize it
   rubberBandMode.BorderColor = Windows.UI.Color.FromArgb(255, 255, 0, 0);
   rubberBandMode.BorderDashArray = 4;
   rubberBandMode.BorderThickness = 2;
   rubberBandMode.BorderDashOffset = 2;
   // Hook to its RubberBandCompleted event
   rubberBandMode.RubberBandCompleted += rubberBandMode_RubberBandCompleted;

   _viewer.DefaultInteractiveMode = rubberBandMode;

   _infoLabel.Text = "Draw a blue with yellow border rectangle on the image";
}

// Called by the base class when the mode is stopped
void rubberBandMode_RubberBandCompleted(object sender, ImageViewerRubberBandEventArgs e)
{
   // Get the final rectangle
   LeadRectD rect = LeadRectDHelper.FromLTRB(e.Point1.X, e.Point1.Y, e.Point2.X, e.Point2.Y);

   // Get the visible rect of the _viewer
   Rect imageControlRect = _viewer.ImageControlRectangle(true);
   LeadRectD visibleRect = LeadRectDHelper.FromLTRB(imageControlRect.Left, imageControlRect.Top, imageControlRect.Right, imageControlRect.Bottom);

   // Interset this rectangle with the visible area of the _viewer
   rect = LeadRectDHelper.Intersect(rect, visibleRect);

   // Make sure it has some width and height and not too small
   if (rect.Width > 0 && rect.Height > 0)
   {
      // Get the viewer canvas
      Canvas viewerCanvas = _viewer.InteractiveModeCanvas;

      double x = rect.X;
      double y = rect.Y;
      double width = rect.Width;
      double height = rect.Height;

      // Add rectangle shape filled with Blue
      Rectangle rectShape = new Rectangle
      {
         Width = rect.Width,
         Height = rect.Height,
         Fill = new SolidColorBrush(Windows.UI.Color.FromArgb(255, 0, 0, 255)),
         StrokeThickness = 2
      };
      Canvas.SetLeft(rectShape, x);
      Canvas.SetTop(rectShape, y);
      viewerCanvas.Children.Add(rectShape);

      // Invalidate the _viewer (so it draws the back canvas into the foreground)
      _viewer.Invalidate();
   }
}