ChartDataLabelCollection.ShowPercentage property

Allows to specify whether percentage value is to be displayed for the data labels of the entire series. Default value is false. Applies only to Pie charts.

public bool ShowPercentage { get; set; }


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