如何使用MigraDoc创建饼图

using MigraDoc.DocumentObjectModel;
using MigraDoc.Rendering;
using MigraDoc.DocumentObjectModel.Shapes;

Document document = new Document();

Section section = document.AddSection();

Chart chart = section.AddChart();

chart.Type = ChartType.Pie2D;

ChartPlotArea plotArea = chart.AddPlotArea();

Series series = plotArea.AddSeries();

series.Add(new ChartPoint("Category 1", 30));
series.Add(new ChartPoint("Category 2", 40));
series.Add(new ChartPoint("Category 3", 20));

chart.Title = "Pie Chart";
chart.Legend.Position = LegendPosition.Right;

PdfDocumentRenderer renderer = new PdfDocumentRenderer();
renderer.Document = document;
renderer.RenderDocument();
renderer.PdfDocument.Save("pie_chart.pdf");