MS Chart Control 學習手記 - 圓餅圖

using System.Web.UI.DataVisualization.Charting;
using System.Drawing;

namespace Chart.AJAX
{
    public partial class Export_AJAX : System.Web.UI.Page
    {
        void CreateChart()
        {
            string[] xValues = { "0-20", "20-30", "30-40", "40-50", "50-60", "> 60", "unknow" };
            int[] yValues = {5, 18, 45, 17, 2, 1, 162 };

            //ChartAreas,Series,Legends 基本設定-------------------------------------------------
            Chart Chart1 = new Chart();
            Chart1.ChartAreas.Add("ChartArea1"); //圖表區域集合
            Chart1.Legends.Add("Legends1"); //圖例集合說明
            Chart1.Series.Add("Series1"); //數據序列集合

            //設定 Chart-------------------------------------------------------------------------
            Chart1.Width = 770;
            Chart1.Height = 400;
            Title title = new Title();
            title.Text = titleStr;
            title.Alignment = ContentAlignment.MiddleCenter;
            title.Font = new System.Drawing.Font("Trebuchet MS", 14F, FontStyle.Bold);
            Chart1.Titles.Add(title);

            //設定 ChartArea1--------------------------------------------------------------------
            Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = is3D;
            Chart1.ChartAreas[0].AxisX.Interval = 1;

            //設定 Legends-------------------------------------------------------------------------                
            //Chart1.Legends["Legends1"].DockedToChartArea = "ChartArea1"; //顯示在圖表內
            //Chart1.Legends["Legends1"].Docking = Docking.Bottom; //自訂顯示位置
            //背景色
            Chart1.Legends["Legends1"].BackColor = Color.FromArgb(235, 235, 235); 
            //斜線背景
            Chart1.Legends["Legends1"].BackHatchStyle = ChartHatchStyle.DarkDownwardDiagonal; 
            Chart1.Legends["Legends1"].BorderWidth = 1;
            Chart1.Legends["Legends1"].BorderColor = Color.FromArgb(200, 200, 200);

            //設定 Series1-----------------------------------------------------------------------
            Chart1.Series["Series1"].ChartType = SeriesChartType.Pie;
            //Chart1.Series["Series1"].ChartType = SeriesChartType.Doughnut;
            Chart1.Series["Series1"].Points.DataBindXY(xValues, yValues);
            Chart1.Series["Series1"].LegendText = "#VALX:    [ #PERCENT{P1} ]"; //X軸 + 百分比
            Chart1.Series["Series1"].Label = "#VALX\n#PERCENT{P1}"; //X軸 + 百分比
            //Chart1.Series["Series1"].LabelForeColor = Color.FromArgb(0, 90, 255); //字體顏色
            //字體設定
            Chart1.Series["Series1"].Font = new System.Drawing.Font("Trebuchet MS", 10, System.Drawing.FontStyle.Bold); 
            Chart1.Series["Series1"].Points.FindMaxByValue().LabelForeColor = Color.Red;
            //Chart1.Series["Series1"].Points.FindMaxByValue().Color = Color.Red;
            //Chart1.Series["Series1"].Points.FindMaxByValue()["Exploded"] = "true";
            Chart1.Series["Series1"].BorderColor = Color.FromArgb(255, 101, 101, 101);
            
            //Chart1.Series["Series1"]["DoughnutRadius"] = "80"; // ChartType為Doughnut時，Set Doughnut hole size
            //Chart1.Series["Series1"]["PieLabelStyle"] = "Inside"; //數值顯示在圓餅內
            Chart1.Series["Series1"]["PieLabelStyle"] = "Outside"; //數值顯示在圓餅外
            //Chart1.Series["Series1"]["PieLabelStyle"] = "Disabled"; //不顯示數值
            //設定圓餅效果，除 Default 外其他效果3D不適用
            Chart1.Series["Series1"]["PieDrawingStyle"] = "Default"; 
            //Chart1.Series["Series1"]["PieDrawingStyle"] = "SoftEdge";
            //Chart1.Series["Series1"]["PieDrawingStyle"] = "Concave";

            //Random rnd = new Random();  //亂數產生區塊顏色
            //foreach (DataPoint point in Chart1.Series["Series1"].Points)
            //{
            //    //pie 顏色
            //    point.Color = Color.FromArgb(150, rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255)); 
            //}
            Page.Controls.Add(Chart1);  
        }
    }
}

畫出來的圓餅圖就像這樣