using System.Web.UI.DataVisualization.Charting;
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using System.Drawing;
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namespace Chart.AJAX
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public partial class Export_AJAX : System.Web.UI.Page
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{
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void CreateChart()
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{
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string[] xValues = { "0-20", "20-30", "30-40", "40-50", "50-60", "> 60", "unknow" };
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int[] yValues = {5, 18, 45, 17, 2, 1, 162 };
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//ChartAreas,Series,Legends 基本設定-------------------------------------------------
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Chart Chart1 = new Chart();
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Chart1.ChartAreas.Add("ChartArea1"); //圖表區域集合
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Chart1.Legends.Add("Legends1"); //圖例集合說明
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Chart1.Series.Add("Series1"); //數據序列集合
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//設定 Chart-------------------------------------------------------------------------
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Chart1.Width = 770;
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Chart1.Height = 400;
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Title title = new Title();
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title.Text = titleStr;
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title.Alignment = ContentAlignment.MiddleCenter;
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title.Font = new System.Drawing.Font("Trebuchet MS", 14F, FontStyle.Bold);
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Chart1.Titles.Add(title);
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//設定 ChartArea1--------------------------------------------------------------------
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Chart1.ChartAreas["ChartArea1"].Area3DStyle.Enable3D = is3D;
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Chart1.ChartAreas[0].AxisX.Interval = 1;
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//設定 Legends-------------------------------------------------------------------------
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//Chart1.Legends["Legends1"].DockedToChartArea = "ChartArea1"; //顯示在圖表內
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//Chart1.Legends["Legends1"].Docking = Docking.Bottom; //自訂顯示位置
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//背景色
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Chart1.Legends["Legends1"].BackColor = Color.FromArgb(235, 235, 235);
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//斜線背景
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Chart1.Legends["Legends1"].BackHatchStyle = ChartHatchStyle.DarkDownwardDiagonal;
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Chart1.Legends["Legends1"].BorderWidth = 1;
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Chart1.Legends["Legends1"].BorderColor = Color.FromArgb(200, 200, 200);
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//設定 Series1-----------------------------------------------------------------------
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Chart1.Series["Series1"].ChartType = SeriesChartType.Pie;
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//Chart1.Series["Series1"].ChartType = SeriesChartType.Doughnut;
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Chart1.Series["Series1"].Points.DataBindXY(xValues, yValues);
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Chart1.Series["Series1"].LegendText = "#VALX: [ #PERCENT{P1} ]"; //X軸 + 百分比
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Chart1.Series["Series1"].Label = "#VALX\n#PERCENT{P1}"; //X軸 + 百分比
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//Chart1.Series["Series1"].LabelForeColor = Color.FromArgb(0, 90, 255); //字體顏色
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//字體設定
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Chart1.Series["Series1"].Font = new System.Drawing.Font("Trebuchet MS", 10, System.Drawing.FontStyle.Bold);
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Chart1.Series["Series1"].Points.FindMaxByValue().LabelForeColor = Color.Red;
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//Chart1.Series["Series1"].Points.FindMaxByValue().Color = Color.Red;
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//Chart1.Series["Series1"].Points.FindMaxByValue()["Exploded"] = "true";
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Chart1.Series["Series1"].BorderColor = Color.FromArgb(255, 101, 101, 101);
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//Chart1.Series["Series1"]["DoughnutRadius"] = "80"; // ChartType為Doughnut時，Set Doughnut hole size
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//Chart1.Series["Series1"]["PieLabelStyle"] = "Inside"; //數值顯示在圓餅內
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Chart1.Series["Series1"]["PieLabelStyle"] = "Outside"; //數值顯示在圓餅外
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//Chart1.Series["Series1"]["PieLabelStyle"] = "Disabled"; //不顯示數值
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//設定圓餅效果，除 Default 外其他效果3D不適用
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Chart1.Series["Series1"]["PieDrawingStyle"] = "Default";
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//Chart1.Series["Series1"]["PieDrawingStyle"] = "SoftEdge";
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//Chart1.Series["Series1"]["PieDrawingStyle"] = "Concave";
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//Random rnd = new Random(); //亂數產生區塊顏色
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//foreach (DataPoint point in Chart1.Series["Series1"].Points)
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//{
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// //pie 顏色
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// point.Color = Color.FromArgb(150, rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255));
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//}
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Page.Controls.Add(Chart1);
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}
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}
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} |
畫出來的圓餅圖就像這樣
