Hi Timothy,
Yes, you can easily display a legend with a single item (or any custom number of items), when you set the legend mode property to manual. The following code shows how to create a chart with two series and a legend that displays a single legend item:
NChart chart = nChartControl1.Charts[0];
for (int i = 0; i < 2; i++)
{
NBarSeries barSeries = new NBarSeries();
barSeries.MultiBarMode = MultiBarMode.Clustered;
barSeries.Values.Add(10);
barSeries.Values.Add(20);
barSeries.Values.Add(30);
chart.Series.Add(barSeries);
}
NLegend legend = nChartControl1.Legends[0];
legend.Mode = LegendMode.Manual;
NLegendItemCellData legendItem = new NLegendItemCellData("Single Legend Item", LegendMarkShape.Rectangle);
legendItem.MarkFillStyle = new NColorFillStyle(Color.Red);
legendItem.MarkLineStyle.Width = new NLength(0);
legend.Data.Items.Add(legendItem);
You can also take a look at "All Examples \ Panels \ Legend" group of examples for more examples of how to configure the legend.
We hope this helps - let us know if you have any questions or meet any problems.
Best Regards,
Nevron Support Team