PDFsharp & MigraDoc Foundation

var chart = new Chart { Left = 0, Width = Unit.FromCentimeter(16), Height = Unit.FromCentimeter(12), Type = ChartType.Pie2D};

var series = chart.SeriesCollection.AddSeries();

var pieSeries = chartData.YSeries.First();

series.Add(10, 20, 30);
series.HasDataLabel = true;

var xseries = chart.XValues.AddXSeries();
xseries.Add("Текст 10", "Текст 20", "Текст 30");
           

var legend = chart.RightArea.AddLegend();
chart.DataLabel.Type = DataLabelType.Percent;
chart.DataLabel.Position = DataLabelPosition.OutsideEnd;

/// <summary>
/// Gets the chart's default font for rendering.
/// </summary>
internal XFont DefaultFont
{
  get
  {
    if (defaultFont == null)
        defaultFont = Converter.ToXFont(this.chart.font, new XFont("Arial", 12, XFontStyle.Regular, new XPdfFontOptions(PdfFontEncoding.Unicode, PdfFontEmbedding.Always)));

    return defaultFont;
  }
}
XFont defaultFont;

/// <summary>
/// Gets the chart's default font for rendering data labels.
/// </summary>
internal XFont DefaultDataLabelFont
{
  get
  {
    if (defaultDataLabelFont == null)
      defaultDataLabelFont = Converter.ToXFont(this.chart.font, new XFont("Arial", 10, XFontStyle.Regular, new XPdfFontOptions(PdfFontEncoding.Unicode, PdfFontEmbedding.Always)));

    return defaultDataLabelFont;
  }
}
XFont defaultDataLabelFont;