Example: Pie Chart

using Imsl.Chart2D;
using System;
using System.Windows.Forms;

public class PieEx1 : FrameChart 
{

    public PieEx1() 
    {
        Chart chart = this.Chart;
        AxisXY axis = new AxisXY(chart);
        
        //    Create an instance of a Pie Chart
        double[] y = new double[]{10.0, 20.0, 30.0, 40.0};
        Pie pie = new Pie(chart, y);
        
        //    Set the Pie Chart Title
        chart.ChartTitle.SetTitle("A Simple Pie Chart");
        
        //    Set the colors of the Pie Slices
        PieSlice[] slice = pie.GetPieSlice();
        slice[0].FillColor = System.Drawing.Color.Red;
        slice[1].FillColor = System.Drawing.Color.Blue;
        slice[2].FillColor = System.Drawing.Color.Black;
        slice[3].FillColor = System.Drawing.Color.Yellow;
        
        //    Set the Pie Slice Labels
        pie.LabelType = Imsl.Chart2D.Pie.LABEL_TYPE_TITLE;
        slice[0].SetTitle("Fish");
        slice[1].SetTitle("Pork");
        slice[2].SetTitle("Poultry");
        slice[3].SetTitle("Beef");
        
        //    Explode a Pie Slice
        slice[0].Explode = 0.2;
    }

    public static void Main(string[] argv) 
    {
        System.Windows.Forms.Application.Run(new PieEx1());
    }
}

Output

Link to C# source.