This sample shows the gold medal count scored by each country at the Rio Olympic Games using smart labels on the chart.
In this example, you can see how the labels can be arranged smartly without overlapping. You can use the EnableSmartLabels property to enable or disable the support.
Tooltip is enabled in this example. To see the tooltip in action, hover a point or tap on a point in touch enabled devices.
More information on the smart labels can be found in this documentation section.