Update Panel in ASP.NET

Hi,
sir please send me one example.

Update panels are ajax control that helps in partial rendering of the page. If I have a page with multple sections and only one section values are updated and I want to submit the page, we do not require to submit the whole page back to IIS, only that section which is updated needs to be sent back to the server. Update panel helps you in achieving this.

Follow the link for more details:
http://ajax.net-tutorials.com/controls/updatepanel-control/