How to Make Microsoft Asp.Net Chart Controls work in SharePoint 2010

First Copy the System.Web.DataVisualization dll to the bin folder of your respective sharepoint site. Now add below steps in web.config. This will get you a Microsoft Asp.Net Chart WebPart into your SharePoint 2010 site. Here is the reference link i had followed.
http://social.technet.microsoft.com/Forums/en-US/sharepoint2010programming/thread/29c02114-19a4-4f68-8043-dd1341634656

<appSettings>
  <add key="ChartImageHandler" value="storage=file;timeout=20;" />
</appSettings>


<compilation targetFramework="4.0">
 <assemblies>
  <add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
 </assemblies>
</compilation>

<system.webServer>

<handlers>
      <add name="ChartImg" verb="*" path="ChartImg.axd"  type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"  />
    </handlers>
</system.webServer>


Also make sure that you've the following register directives

<%@ Register Assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
    Namespace="System.Web.UI.DataVisualization.Charting" TagPrefix="asp" %>