ChartDataLabelCollection.ShowLegendKey property

Allows to specify whether legend key is to be displayed for the data labels of the entire series. Default value is false.

public bool ShowLegendKey { get; set; }


Value defined for this property can be overridden for an individual data label with using the ShowLegendKey property.


Shows how to work with data labels of a pie chart.

Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);

Chart chart = builder.InsertChart(ChartType.Pie, 500, 300).Chart;

// Clear the chart's demo data series to start with a clean chart.

// Insert a custom chart series with a category name for each of the sectors, and their frequency table.
ChartSeries series = chart.Series.Add("Aspose Test Series",
    new[] { "Word", "PDF", "Excel" },
    new[] { 2.7, 3.2, 0.8 });

// Enable data labels that will display both percentage and frequency of each sector, and modify their appearance.
series.HasDataLabels = true;
ChartDataLabelCollection dataLabels = series.DataLabels;
dataLabels.ShowLeaderLines = true;
dataLabels.ShowLegendKey = true;
dataLabels.ShowPercentage = true;
dataLabels.ShowValue = true;
dataLabels.Separator = "; ";

doc.Save(ArtifactsDir + "Charts.DataLabelsPieChart.docx");

See Also