Introduction :
 Hi, Here i will explain you how to code for Slicing the Chart using and C# , In previous Tutorial i have explained How to Create the Charts with . By using the post-back value i am making the chart to Slice on the Chart Click. 

Important Steps :

  1. Create the post-back value for Chart Series and assign the value as Index as coded below.
  2. Create the Click event for created chart
  3. Get the post-back value and Explode the chart as code below.
Database Structure :

Aspx code :

<%@ Register Assembly="System.Web.DataVisualization, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35"

    Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %>
<!DOCTYPE html>
<head runat="server">
<form id="form1" runat="server">
<div style="text-align:center">
<asp:Chart ID="Chart1" Width="293px"  Height="210px" runat="server" onclick="Chart1_Click" >
<asp:Series ChartType="Pie" Name="Series1" Legend="Legend1">
<asp:ChartArea Area3DStyle-Enable3D="true" Name="ChartArea1">
<Area3DStyle Enable3D="True"></Area3DStyle>

C# code :

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;

namespace WebApplication1
public partial class Page1 : System.Web.UI.Page
protected void Page_Load(object sender, EventArgs e)
SqlConnection con = new SqlConnection("your connection string ");
SqlDataAdapter da = new SqlDataAdapter("select * from table1", con);
DataSet ds = new DataSet();
Chart1.DataSource = ds;
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
Chart1.Series["Series1"].Points.AddXY(ds.Tables[0].Rows[i]["Name"], ds.Tables[0].Rows[i]["Attendence"]);
Chart1.Series["Series1"].PostBackValue = "#INDEX"; //important
protected void Chart1_Click(object sender, ImageMapEventArgs e)
int pval = Convert.ToInt32(e.PostBackValue);
Chart1.Series["Series1"].Points[pval]["Exploded"] = "true";

web.config:    Add the below code to your web.config file under <system.websection.

<add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />
<add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting" assembly="System.Web.DataVisualization, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<compilation debug="true" targetFramework="4.0">
<add assembly="System.Web.DataVisualization, Version=, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
 . . . . . . . 
 . . . . . .