Mapper Property

public AnnContainerMapper Mapper {get; set;}

[TestMethod]
public void AnnContainer_Mapper()
{
   double inch = 720.0;
   // Create a new annotation container, 8.5 by 11 inches
   AnnContainer container = new AnnContainer();
   // Size must be in annotation units (1/720 of an inch)
   container.Size = LeadSizeDHelper.Create(8.5 * inch, 11 * inch);

   // Set its mapper, assuming the screen DPI is 96 and the image DPI is 300
   container.Mapper = new AnnContainerMapper(96, 96, 300, 300);

   // Add a blue on yellow rectangle from 3in 3in to 4in 4in
   AnnRectangleObject rectObj = new AnnRectangleObject();
   rectObj.Rect = LeadRectDHelper.Create(3 * inch, 3 * inch, 1 * inch, 1 * inch);
   rectObj.Stroke = AnnStroke.Create(AnnSolidColorBrush.Create("Blue"), LeadLengthDHelper.Create(1));
   rectObj.Fill = AnnSolidColorBrush.Create("Yellow");
   container.Children.Add(rectObj);

   // Get the rectangle in annotations units
   LeadRectD rc = rectObj.Rect;
   Debug.WriteLine("Annotations units: " + rc.X + "," + rc.Y + "," + rc.Width + "," + rc.Height);

   // Convert it to image coordinates
   rc = container.Mapper.RectFromContainerCoordinates(rc, AnnFixedStateOperations.None);
   Debug.WriteLine("Image units (pixels): " + rc.X + "," + rc.Y + "," + rc.Width + "," + rc.Height);

   // If this container is used with an image, you can use the pixels values above to find the exact value on the image

   // Convert it to back to annotations units
   rc = container.Mapper.RectToContainerCoordinates(rc);
   Debug.WriteLine("Original units: " + rc.X + "," + rc.Y + "," + rc.Width + "," + rc.Height);
}