asp.net - How to create a bubble chart

Chart Type Bubble
ChartTypeBubble.aspx

<%@ Page Language="C#" AutoEventWireup="true" %>

<!DOCTYPE html>

<script runat="server">
    protected void Button1_Click(object sender, System.EventArgs e)
    {
        Chart1.Series["ExamResult"].ChartType = SeriesChartType.Bubble;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>How to set change Chart ChartType Bubble programmatically in asp.net</title>
    <style type="text/css">
        h2
        {
            color:DeepPink;
            font-style:italic;
            }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h2>Chart example and tutorial: How to set change<br />Chart ChartType Bubble programmatically in asp.net</h2>
        <hr width="525" align="left" color="Pink" />
        <br />
        <asp:Chart 
            ID="Chart1" 
            runat="server" 
            BorderlineDashStyle="DashDotDot"
            BorderlineWidth="1"
            BorderlineColor="Crimson"
            Palette="Chocolate"
            >
            <Series>
                <asp:Series 
                    Name="ExamResult" 
                    YValueType="Int32" 
                    ChartArea="ChartArea1"
                    Color="Snow"
                    >
                    <Points>
                        <asp:DataPoint AxisLabel="Sagor" YValues="82" />
                        <asp:DataPoint AxisLabel="Lakhi" YValues="95" />
                        <asp:DataPoint AxisLabel="Kumkum" YValues="73" />
                        <asp:DataPoint AxisLabel="Munna" YValues="47" />
                        <asp:DataPoint AxisLabel="Kna" YValues="52" />
                    </Points>
                </asp:Series>
            </Series>
            <ChartAreas>
                <asp:ChartArea 
                    Name="ChartArea1" 
                    BackColor="DodgerBlue" 
                    Area3DStyle-Enable3D="true"
                    >
                </asp:ChartArea>
            </ChartAreas>
        </asp:Chart>
        <br />
        <asp:Button 
            ID="Button1"
            runat="server"
            Text="Set Chart ChartType Bubble"
            Font-Bold="true"
            OnClick="Button1_Click"
            ForeColor="DodgerBlue"
            Height="45"
            />
    </div>
    </form>
</body>
</html>