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);
                }
                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);
		}