HttpResponse.RedirectToRoutePermanent Method (String)
Performs a permanent redirection from a requested URL to a new URL by using a route name.
Assembly: System.Web (in System.Web.dll)
This method is provided for coding convenience. It is equivalent to calling the RedirectPermanent(String, Boolean) method with the second parameter set to false.
This method converts the route name that is passed in routeName to a URL by using the RouteCollection.GetVirtualPath method.
ASP.NET performs the redirection by returning a 301 HTTP status code.
Available since 4.0