DataLabels Method
Returns an object that represents either a single data label or a collection of all the data labels for the series.
expression.DataLabels(Index)
expression Required. An expression that returns one of the objects in the Applies To list.
Index Optional Variant. The number of the data label.
Example
This example sets the data labels for series one to show their key, assuming that their values are visible when the example runs.
With myChart.SeriesCollection(1)
.HasDataLabels = True
With .DataLabels
.ShowLegendKey = True
.Type = xlValue
End With
End With