New Post: Rectangle annotation click

var annotation = new RectangleAnnotation() { MinimumX = 10, MaximumX = 60, MinimumY = 10, MaximumY = 20 };
            plotModel.Annotations.Add(annotation);

            int i = 0;
            annotation.MouseDown += (s, e) =>
            {
                annotation.Text = "Clicked " + (++i) + " times.";
                plotModel.InvalidatePlot(false);
            };