// GET: Sponsors/Details/5
        public async Task <IActionResult> Details(string?id)
        {
            if (id == null)
            {
                return(RedirectToAction("Index", "Home"));
            }

            var sponsor = await sponService.FindAsync(id);

            if (sponsor == null)
            {
                return(NotFound());
            }

            return(View(sponsor));
        }