Creating asp.net chart data programmatically

Step 1 : From the Chart1 control on WebForm1.aspx, remove element and all the elements. The HTML of Chart1 control should now be as shown below.

<table style="border: 1px solid black; font-family: Arial">

<tr>

    <td>

        <b>Select Chart Type:</b>

    </td>

    <td>

        <asp:DropDownList ID="DropDownList1" AutoPostBack="true" runat="server"

            onselectedindexchanged="DropDownList1_SelectedIndexChanged">

          

        </asp:DropDownList>

    </td>

</tr>

<tr>

    <td colspan="2">

<asp:Chart ID="Chart1" runat="server">

    <Titles><asp:Title Text="Student Total Marks" ></asp:Title></Titles>

        <series>

            <asp:Series Name="Series1" ChartArea="ChartArea1" ChartType="Pie">

        

            </asp:Series>

        </series>

        <chartareas>

            <asp:ChartArea Name="ChartArea1">

            <AxisX Title="Student Names"></AxisX>

            <AxisY Title="Total Marks"></AxisY>

            </asp:ChartArea>

        </chartareas>

    </asp:Chart>

    </td>

  </tr>

</table>

Step 2 : Modify the code in the code-behind file as shown below

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.DataVisualization.Charting;

namespace Settingcharttypepropertydynamically

{

    public partial class WebForm1 : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            if (!IsPostBack)

            {

                GetChartData();

                GetChartTypes();

            }

        }

        private void GetChartData()

        {

            Series xseries = Chart1.Series["Series1"];

            xseries.Points.AddXY("Srinath", 200);

            xseries.Points.AddXY("Naveen", 300);

            xseries.Points.AddXY("Krishna", 400);

        }

        private void GetChartTypes()

        {

            foreach (int chartType in Enum.GetValues(typeof(SeriesChartType)))

            {

                ListItem li = new ListItem(Enum.GetName(typeof(SeriesChartType),

                    chartType), chartType.ToString());

                DropDownList1.Items.Add(li);

            }

        }

        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)

        {

            GetChartData();

            this.Chart1.Series["Series1"].ChartType = (SeriesChartType)Enum.Parse(

             typeof(SeriesChartType), DropDownList1.SelectedValue);

        }

    }

}

Run the Application