Taimer.User.NameExists C# (CSharp) Method

        public int NameExists()
        {
            CADUser cad=new CADUser();
            List<User> users = UsersToList(cad.GetUsers());
            int index = 0;

            foreach (User u in users)
            {
                if (u.Nombre == Nombre && u.Email != Email)
                    index++;
            }
            return index;
        }