Ajax Integration with Sharepoint

Master Page

1. Add the following tag just below the form tag of master page

 <asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />

Web.Config

1. Add safe control

 <SafeControl Assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" Namespace="System.Web.UI" TypeName="*" Safe="True" />

2. Add the http handler inside <httpHandlers> tag of web.config

<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions,	Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory,	System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions,	Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false" />

3. Add the HttpModule inside <httpModules> tag of web.config

 <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral,PublicKeyToken=31bf3856ad364e35" />

4. Add the assembly inside <assembly> tag of web.config

 <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />

5. Add controls Tag inside <pages> tag of web.config

<controls>

	<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral,		PublicKeyToken=31bf3856ad364e35" />

</controls>

If you are adding <system.webServer> tag inside <configuration> like following then you could avoid step 2 and 3

<system.webServer>

</modules>

</handlers>

</system.webServer>