private UserModel SetupFormsAuthTicket(string userName, bool persistanceFlag)
        {
            UserModel user;
            using (var usersContext = new DataContext())
            {
                user = usersContext.GetUser(userName);
            }
            var userId = user.UserId;
            var userData = userId.ToString(CultureInfo.InvariantCulture);
            var authTicket = new FormsAuthenticationTicket(1, //version
                                userName, // user name
                                DateTime.Now,             //creation
                                DateTime.Now.AddMinutes(30), //Expiration
                                persistanceFlag, //Persistent
                                userData);

            var encTicket = FormsAuthentication.Encrypt(authTicket);
            Response.Cookies.Add(new HttpCookie(FormsAuthentication.FormsCookieName, encTicket));
            return user;
        }