I am trying to identify whch image is clicked on the Carousel panel.

private void OnItemMouseDown(object sender, MouseButtonEventArgs e)
 {
      //  MessageBox.Show("You clicked me!");
      string imageName = "image name goes here";
       MessageBox.Show(imageName);
 }

I do have the click event wired up and I can tell when an image is clicked but how do I identify which one was clicked in code?