In ASP. NET, developers often use the Response. Redirect () method to convert requests from old URLs to new URLs. But what many developers do not realize is that Response. the Redirect () method sends an HTTP 302 Found (temporary redirection) reply, leading to excessive HTTP round-trips when the user attempts to access the old URL. A search engine generally does not follow multiple redirection directions, which means that using a temporary redirection will negatively affect your webpage ranking.
ASP. NET 4 introduces a new Response. RedirectPermanent (string url) helper method, which can be used for HTTP 301 (permanent redirection) redirection. This will lead to identification of permanently retargeted search engines and other user proxies to save and use the new URL associated with the content. This will index your content and increase your search engine page ranking.