public ActionResult Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                User user = null;

                using (EFDbUserContext db = new EFDbUserContext())
                {
                    user = db.Users.FirstOrDefault(u => u.Email == model.Name);
                }

                if (user == null)
                {
                    using (EFDbUserContext db = new EFDbUserContext())
                    {
                        db.Users.Add(new User {
                            Email = model.Name, Password = model.Password, RoleId = 2
                        });
                        db.SaveChanges();

                        user = db.Users.Where(u => u.Email == model.Name && u.Password == model.Password).FirstOrDefault();
                    }

                    if (user != null)
                    {
                        FormsAuthentication.SetAuthCookie(model.Name, true);
                        return(RedirectToAction("List", "Game"));
                    }
                }
                else
                {
                    ModelState.AddModelError("", "User with this login already exists...");
                }
            }
            return(View(model));
        }
        public ActionResult Login(LoginModel model)
        {
            if (ModelState.IsValid)
            {
                User user = null;

                using (EFDbUserContext db = new EFDbUserContext())
                {
                    user = db.Users.FirstOrDefault(u => u.Email == model.Name && u.Password == model.Password);
                }

                if (user != null)
                {
                    FormsAuthentication.SetAuthCookie(model.Name, true);

                    return(RedirectToAction("List", "Game"));
                }
                else
                {
                    ModelState.AddModelError("", "User with this login isn't exist...");
                }
            }
            return(View(model));
        }