How to enable SSL certificate in IIS 6 and convert http to https under Global.asax?

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IIS6

C#2.0

C#

ASP.NET

IIS

How to enable SSL certificate in IIS 6 and convert http to https under Global.asax? Also is it possible to test http to https auto redirection. I mean if user types http instead of https after SSL enabled it must redirect to https. Url Rewrite already tried but didn't work. Another code is as follows under Global.asax and called under Application_Begin Request.

private void RedirectToCorrectSSLScheme()
 {
     Uri pageRequest = Request.Url;
     string requestPath = pageRequest.GetLeftPart(UriPartial.Path).ToLower();

      requestPath = Server.UrlDecode(requestPath);
     // PageIsSecure returns if the given page should be secure or not. I
     //maintain a list of secure pages or
     //secure directory in an XML config.
   //  bool securePage = GetSecurePages().PageIsSecure(requestPath);
     //Instead of localhost we can set the IP Address of Dubai server
     if (pageRequest.Scheme == "https" && pageRequest.Host.Contains("localhost") && requestPath.Contains(".aspx"))
     {
         //Response.Redirect("http://" + pageRequest.Host + pageRequest.PathAndQuery, true);
         Response.Redirect(requestPath, true);
     }
     //Added by Alex to check  external url of qatar server
     //Instead of localhost we can set the IP Address of Dubai server
     if (pageRequest.Scheme == "http" && pageRequest.Host.ToString()!="localhost"  && requestPath.Contains(".aspx"))

     {
        //Response.Redirect("https://" + pageRequest.Host + pageRequest.PathAndQuery, true);

        Response.Redirect(requestPath, true);
     }
 }

Still the issue persists locally.