public async Task <IActionResult> EditCredits(string id, EditCreditViewMOdel model)
        {
            var user = await userManager.FindByIdAsync(id);

            user.Credits = model.Credits;
            await userManager.UpdateAsync(user);

            return(RedirectToAction("ListCredits"));
        }
        public async Task <IActionResult> EditCredits(string id)
        {
            var model = new EditCreditViewMOdel();
            var user  = await userManager.FindByIdAsync(id);

            model.User    = user;
            model.Credits = user.Credits;

            return(View(model));
        }