asp.net-mvc – 如何将OpenId与ASP.Net成员集成在MVC中

public ActionResult OpenIdLogin()
    {
        string returnUrl = VirtualPathUtility.ToAbsolute("~/");
        var openid = new OpenIdRelyingParty();
        var response = openid.GetResponse();
        if (response == null)
        {
            // Stage 2: user submitting Identifier
            Identifier id;
            if (Identifier.TryParse(Request["openid_identifier"],out id))
            {
                try
                {
                    IAuthenticationRequest req = openid.CreateRequest(Request["openid_identifier"]);

                    var fetch = new FetchRequest();
                    //ask for more info - the email address
                    var item = new AttributeRequest(WellKnownAttributes.Contact.Email);
                    item.IsRequired = true;
                    fetch.Attributes.Add(item);
                    req.AddExtension(fetch);

                    return req.RedirectingResponse.AsActionResult();
                }
                catch (ProtocolException ex)
                {
                    ViewData["Message"] = ex.Message;
                    return View("Logon");
                }
            }
            else
            {
                ViewData["Message"] = "Invalid identifier";
                return View("Logon");
            }
        }
        else
        {
            // Stage 3: OpenID Provider sending assertion response
            switch (response.Status)
            {
                case AuthenticationStatus.Authenticated:

                    var fetch = response.GetExtension<FetchResponse>();
                    string name = response.FriendlyIdentifierForDisplay;
                    if (fetch != null)
                    {
                        IList<string> emailAddresses = fetch.Attributes[WellKnownAttributes.Contact.Email].Values;
                        string email = emailAddresses.Count > 0 ? emailAddresses[0] : null;
                        //don't show the email - it's creepy. Just use the name of the email
                        name = email.Substring(0,email.IndexOf('@'));
                    }
                    else
                    {

                        name = name.Substring(0,name.IndexOf('.'));
                    }

                    //FormsAuthentication.SetAuthCookie(name,false);
                    SetCookies(name,name);
                    AuthAndRedirect(name,name);

                    if (!string.IsNullOrEmpty(returnUrl))
                    {
                        return Redirect(returnUrl);
                    }
                    else
                    {
                        return RedirectToAction("Index","Home");
                    }
                case AuthenticationStatus.Canceled:
                    ViewData["Message"] = "Canceled at provider";
                    return View("Logon");
                case AuthenticationStatus.Failed:
                    ViewData["Message"] = response.Exception.Message;
                    return View("Logon");
            }
        }
        return new EmptyResult();

    }

    ActionResult AuthAndRedirect(string userName,string friendlyName)
    {
        string returnUrl = Request["ReturnUrl"];
        SetCookies(userName,friendlyName);

        if (!String.IsNullOrEmpty(returnUrl))
        {
            return Redirect(returnUrl);
        }
        else
        {
            return RedirectToAction("Index","Home");
        }
    }