public SimpleMembershipInitializer()
            {
                Database.SetInitializer<UsersContext>(null);

                try {
                    using (var context = new UsersContext()) {
                        if (!context.Database.Exists()) {
                            // Create the SimpleMembership database without Entity Framework migration schema
                            ((IObjectContextAdapter)context).ObjectContext.CreateDatabase();
                        }
                    }

                    WebSecurity.InitializeDatabaseConnection("DefaultConnection", "UserProfile", "UserId", "UserName", autoCreateTables: true);

                    var roles = (SimpleRoleProvider)Roles.Provider;
                    var membership = (SimpleMembershipProvider)Membership.Provider;

                    if (!roles.RoleExists("Admin")) {
                        roles.CreateRole("Admin");
                    }
                    if (membership.GetUser("su", false) == null) {
                        membership.CreateUserAndAccount("su", "!@kenny12");
                    }
                    if (!roles.GetRolesForUser("su").Contains("Admin")) {
                        roles.AddUsersToRoles(new[] { "su" }, new[] { "Admin" });
                    }

                } catch (Exception ex) {
                    throw new InvalidOperationException("The ASP.NET Simple Membership database could not be initialized. For more information, please see http://go.microsoft.com/fwlink/?LinkId=256588", ex);
                }
            }
        public ActionResult ExternalLoginConfirmation(RegisterExternalLoginModel model, string returnUrl)
        {
            string provider = null;
            string providerUserId = null;

            if (User.Identity.IsAuthenticated || !OAuthWebSecurity.TryDeserializeProviderUserId(model.ExternalLoginData, out provider, out providerUserId)) {
                return RedirectToAction("Manage");
            }

            if (ModelState.IsValid) {
                // Insert a new user into the database
                using (UsersContext db = new UsersContext()) {
                    UserProfile user = db.UserProfiles.FirstOrDefault(u => u.UserName.ToLower() == model.UserName.ToLower());
                    // Check if user already exists
                    if (user == null) {
                        // Insert name into the profile table
                        db.UserProfiles.Add(new UserProfile { UserName = model.UserName });
                        db.SaveChanges();

                        OAuthWebSecurity.CreateOrUpdateAccount(provider, providerUserId, model.UserName);
                        OAuthWebSecurity.Login(provider, providerUserId, createPersistentCookie: false);

                        return RedirectToLocal(returnUrl);
                    } else {
                        ModelState.AddModelError("UserName", "User name already exists. Please enter a different user name.");
                    }
                }
            }

            ViewBag.ProviderDisplayName = OAuthWebSecurity.GetOAuthClientData(provider).DisplayName;
            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }