報表統計(九) 訪問資料庫 Pie圖 Ajax互動

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 1 public partial class WebForm3 : System.Web.UI.Page 2     { 3         protected void Page_Load(object sender, EventArgs e) 4         { 5             CreateChart(); 6         } 7         public void CreateChart() 8         { 9             Chart1.Width = 400;10             Chart1.Height = 300;11             Chart1.BackColor = Color.Azure;12             Chart1.ChartAreas[0].BackColor = Color.Gray;13             Chart1.Series[0].ChartType = SeriesChartType.Pie;//餅圖14             Chart1.Series[0].PostBackValue = "#INDEX";//資料點索引15             Chart1.Series[0].LegendPostBackValue = "#INDEX";//資料點索引16             Chart1.Series[0].LegendToolTip = "#PERCENT";//資料點Y所佔百分比17             Chart1.Series[0].ToolTip = "#VALX:\t#VALY";18             int[] intArr = new int[] { 100, 200, 400, 80 };19             string[] strArr = new string[] { "A", "B", "C", "D" };20             Chart1.Series[0].Points.DataBindXY(strArr, intArr);21             Legend l = new Legend();22             Chart1.Legends.Add(l);23             if(!IsPostBack)24                 Chart1.Series[0].Points[0].CustomProperties = "Exploded=true";25         }26 27         protected void Chart1_Click(object sender, ImageMapEventArgs e)28         {29             int index = Convert.ToInt32(e.PostBackValue);30             if (index >= 0 && index < Chart1.Series[0].Points.Count)31             {32                 Chart1.Series[0].Points[index].CustomProperties += "Exploded=true";33             }34         }35 36     }