As you design your chart, you may encounter series values of 0. You can display series labels for zero values. The ShowOnZeroValues property is used to show/hide these series labels. If the ShowOnZeroValues property is set to false, zero value series labels are hidden. Below is an example of a chart with zero values where the ShowOnZeroValues property is set to false.

In this chart, the third argument is 0, so series labels are not displayed. If the ShowOnZeroValues property is set to true, zero value series labels will be displayed. The image below is an example of a chart with 0 values and the ShowOnZeroValues property set to true.

As you can see from the figure, the third argument is 0, and its title is displayed.