Chart has default implementation of dwell label. When you set
autoLabel property to true for example as follows:
chart creates a chartlabel with dwellLabel property set to true for
each data point. Then it adds them to the chartlabelManager.
It works great however if your dataModel has too many data points it
might take time to create so many chartlabels and thus performance
might be not satisfactory.
The attached example demonstrate the approach how to dynamically update
property of the chart label. While running this program we have an
illusion of dwell label. However we have only one chartlabel for all
data point and we update content and position of this label on the
See attached example.