如何将OpenID与窗体身份验证相结合添加到MVC

public void Configuration(IAppBuilder app)
{
    app.SetDefaultSignInAsAuthenticationType("ExternalCookie");

    app.UseCookieAuthentication(new CookieAuthenticationOptions
    {
        AuthenticationType = "ExternalCookie",
        AuthenticationMode = AuthenticationMode.Passive,
        CookieName = ".AspNet.ExternalCookie",
        ExpireTimeSpan = TimeSpan.FromMinutes(5)
    });

    app.UseOpenIdConnectAuthentication(new OpenIdConnectAuthenticationOptions
    {
        AuthenticationType = "OpenIdConnect",
        SignInAsAuthenticationType = "ExternalCookie",
        Authority = "https://youropenidprovider.com",
        ClientId = "yourclientid",
        ClientSecret = "yourclientsecret",
        RedirectUri = "https://localhost:44300/signin-oidc",
        PostLogoutRedirectUri = "https://localhost:44300/",
        ResponseType = "code",
        Scope = "openid profile",
        UseTokenLifetime = false,
        Notifications = new OpenIdConnectAuthenticationNotifications
        {
            AuthorizationCodeReceived = async n =>
            {
                var client = new HttpClient();
                var tokenResponse = await client.RequestAuthorizationCodeTokenAsync(new AuthorizationCodeTokenRequest
                {
                    Address = "https://youropenidprovider.com/token",
                    ClientId = "yourclientid",
                    ClientSecret = "yourclientsecret",
                    Code = n.Code,
                    RedirectUri = "https://localhost:44300/signin-oidc"
                });

                var userInfoResponse = await client.GetUserInfoAsync(new UserInfoRequest
                {
                    Address = "https://youropenidprovider.com/userinfo",
                    Token = tokenResponse.AccessToken
                });

                var identity = new ClaimsIdentity(n.AuthenticationTicket.Identity.AuthenticationType);
                identity.AddClaims(userInfoResponse.Claims);
                identity.AddClaim(new Claim("access_token", tokenResponse.AccessToken));

                n.AuthenticationTicket = new AuthenticationTicket(identity, n.AuthenticationTicket.Properties);
            }
        }
    });
}

@{
    ViewBag.Title = "Login";
}

<h2>Login</h2>

@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
{
    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <input type="submit" value="Login with OpenID" class="btn btn-default" />
        </div>
    </div>
}

@{
    ViewBag.Title = "Logout";
}

<h2>Logout</h2>

<p>You have been logged out.</p>

public class AccountController : Controller
{
    public ActionResult Login(string returnUrl)
    {
        return Challenge(new AuthenticationProperties { RedirectUri = returnUrl }, "OpenIdConnect");
    }

    public ActionResult Logout()
    {
        Request.GetOwinContext().Authentication.SignOut();
        return RedirectToAction("Index", "Home");
    }
}

@if (User.Identity.IsAuthenticated)
{
    <li>@Html.ActionLink("Logout", "Logout", "Account")</li>
}
else
{
    <li>@Html.ActionLink("Login", "Login", "Account")</li>
}