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Explain UpdatePanel control

Briefly explain about the UpdatePanel control.

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UpdatePanel control specifies portions of the Web page which can be updated together. UpdatePanel control refreshes only the selected part of a Web page instead of refreshing whole page with the postback, we get more flexibility to make rich and client-centric Web applications.

Refreshing the selected part of a Web page is referred as the partial-page update. We can add one or more UpdatePanel control in a Web page that automatically participates in the partial-page update without the custom client script. UpdatePanel control uses UpdatePanel class to support a partial-page rendering.

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