Hi Paulo,
There is currently no way to track the series that generated the legend item, however we'll release a SP that allows you to get this information with code like:
NHitTestResult result = nChartControl1.HitTest(new Point(e.X, e.Y));
if (result.ChartElement == ChartElement.LegendDataItem)
{
NLegendItemCellData legendItemCellData = result.LegendDataItem;
NSeriesBase series = legendItemCellData.Series;
}
The SP will be available in a couple of days.
Best Regards,
Nevron Support Team