ChartLegend
Multiple objects
Represents the legend in the specified chart. Each chart can have only one legend. The Legend object contains one or more LegendEntry objects; each LegendEntry object contains a LegendKey object.
Using the Legend Object
Use the Legend property to return the Legend object. The following example sets the font style for the legend to bold.
myChart.Legend.Font.Bold = True
Remarks
The chart legend isn't visible unless the HasLegend property is True. If this property is False, properties and methods of the Legend object will fail.