ajax toolkit multiple line chart from database only one appear

Hello,

I followed the article found in below link. When i run the page, only one line gets generated according to the values retireved last.

Thanks in advance

http://aspsnippets.com/Articles/ASPNet-AJAX-Line-Chart-Control-Multiple-Series-Populate-from-Database-example.aspx

C#

string query = string.Format("SELECT CHAR(CDATE, ISO),CSCUNITPRICE  FROM UNITZ.DAILYLOG where fundcode = 'BAL'");
        DataTable dt = GetData(query);
        string[] x = new string[dt.Rows.Count];
        decimal[] y = new decimal[dt.Rows.Count];
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            x[i] = dt.Rows[i][0].ToString();
            y[i] = Convert.ToDecimal(dt.Rows[i][1]);
        }
        LineChart1.Series.Add(new AjaxControlToolkit.LineChartSeries { Name = "BAL", Data = y });



        query = string.Format("SELECT CHAR(CDATE, ISO),CSCUNITPRICE  FROM UNITZ.DAILYLOG where fundcode = 'SEC'");
        dt = GetData(query);
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            x[i] = dt.Rows[i][0].ToString();
            y[i] = Convert.ToDecimal(dt.Rows[i][1]);
        }
        LineChart1.Series.Add(new AjaxControlToolkit.LineChartSeries { Name = "SEC", Data = y });



        query = string.Format("SELECT CHAR(CDATE, ISO),CSCUNITPRICE  FROM UNITZ.DAILYLOG where fundcode = 'GRW'");
        dt = GetData(query);
        for (int i = 0; i < dt.Rows.Count; i++)
        {
            x[i] = dt.Rows[i][0].ToString();
            y[i] = Convert.ToDecimal(dt.Rows[i][1]);
        }
        LineChart1.Series.Add(new AjaxControlToolkit.LineChartSeries { Name = "GRW", Data = y });


        LineChart1.CategoriesAxis = string.Join(",", x);
        LineChart1.ChartTitle = string.Format("Price Progress");
        LineChart1.Visible = true;

 ASPX Page

<cc1:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </cc1:ToolkitScriptManager>
    <hr />
    <cc1:LineChart ID="LineChart1" runat="server" ChartHeight="600" ChartWidth="750"
        ChartType="Basic" ChartTitleColor="#0E426C" Visible="false" CategoryAxisLineColor="#D08AD9"
        ValueAxisLineColor="#D08AD9" BaseLineColor="#A156AB">
    </cc1:LineChart>