A data label on a point of the chart series.
Data labels for a chart series are generated and placed automatically. You can specify certain options applied to all data labels within a chart view by using the ChartView.DataLabels property.
To change the appearance of an individual data label, you should add an DataLabel object by its index to the DataLabelCollection which can be accessed by using the Series.CustomDataLabels property. Subsequently you can modify the properties of the added DataLabel.