柱状图

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    前台代码：

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="zhuxingtu2.aspx.cs" Inherits="hhh.zhuxingtu2" %>





   
   
   


   

   

       
       
       

   

   

 

     后台代码：

     public string str = "";//数据
        public string strtxt = "[";//文本
        public string strtxt1 = "";
        public int m = 0;
        public double allcount=0;
        protected void Page_Load(object sender, EventArgs e)
        {
            LoadData();
            Result();
        }
        protected void LoadData()
        {
            XmlDocument myDoc = new XmlDocument();
            myDoc.Load(Server.MapPath("DB_51aspx.xml"));

            XmlNode xn = myDoc.SelectSingleNode("//VoteInfo[ID='2']");//读取数据源

            XmlNodeList xnl = xn.SelectNodes("Item");
            m = xnl.Count;
            double AllCount = 0;//总数

            for (int i = 0; i < xnl.Count; i++)
            {
                AllCount += Convert.ToSingle(xnl.Item(i).SelectSingleNode("Count").InnerText);
            }


            allcount = AllCount;


            for (int i = 0; i < xnl.Count; i++)
            {
                XmlNode xn0 = xnl.Item(i);
                str+=xn0.SelectSingleNode("Count").InnerText+",";
                strtxt += "\'" + xn0.SelectSingleNode("Title").InnerText + "\'" + ",";
                strtxt1 += "\'" + xn0.SelectSingleNode("Title").InnerText + "\'" + ",";
            }

            str = str.Remove(str.Length - 1, 1);//数据
            strtxt = strtxt.Remove(strtxt.Length - 1, 1);//文本
            strtxt += "]";
            strtxt1 = strtxt1.Remove(strtxt1.Length-1,1);
        }
        public string Result()
        {
            string datastr = "";
            string[] arr = str.Split(',');
            string[] arr2 = strtxt1.Split(',');
            for (int i = 0; i < arr.Length; i++)
            {
                datastr += "{" + "y:" + Convert.ToDecimal(arr[i].ToString()) + "," + "color:colors[" + i + "]," + "drilldown: {name:" + arr2[i].ToString() + ",color:colors[" + i + "]}},";
            }
            datastr = datastr.Remove(datastr.Length - 1, 1);
            return datastr;
        }

      效果图展示：

     xml数据源：

    

 
    2
   
   
      1
     
      110
   
   
      2
     
      20
   
   
      3
     
      123
   
   
      4
     
      28
   
   
      5
     
      100
   
   
      6
     
      100
   
   
      7
     
      200
   
   
      8
     
      140
   
   
      9
     
      180
   
   
      10
     
      200
   
   
      11
     
      200
   
   
      12
     
      200
   
   
      13
     
      100
   
   
      14
     
      100
   
   
      15
     
      100
   
   
      16
     
      5
   
   
      17
     
      1
   
   
      18
     
      2
   
   
      19
     
      6
   
   
      20
     
      1
   
   
      20
     
      1
   
   
      20
     
      1
   
   
      20
     
      1
   
 

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