Hello Bryan,

Maybe one possible approach to solve this task could be if you are using BoxAnnotation with LocationType in Pixels. By this way we could handle MouseClick event and compare your current MouseClick location with the locations of our BoxAnnotations. To create BoxAnnotation I`m using the code:

BoxAnnotation ba = new BoxAnnotation();

ba.Text ="Test 1";

ba.Location.Type =LocationType.Pixels;

ba.FillColor =Color.Yellow;

ba.Visible =true;

ba.Border.CornerRadius = 10;

ba.Width = 50;

ba.Location.LocationX = 340;

ba.Location.LocationY = 140;

ultraChart1.Annotations.Annotations. Add(ba);

Also here is the MouseClick event. Of course you could extend the IF condition to be more accurate:

private void ultraChart1_MouseClick(object sender, MouseEventArgs e)

{

 foreach (Annotation ann in ultraChart1.Annotations.Annotations)

 {

  if (ann.GetType() == typeof(BoxAnnotation) && ((BoxAnnotation)ann).Location.LocationX <= e.Location.X && ((BoxAnnotation)ann).Location.LocationX + ((BoxAnnotation)ann).Width >= e.Location.X)

  {

   MessageBox.Show("Annotation: " + ((BoxAnnotation)ann).Text);

   Debug.WriteLine("Annotation: " + ((BoxAnnotation)ann).Text);

    }

   }

}

Please take a look at the attached video file for more details and let me know if you have any questions.

Regards