public async Task <IActionResult> Create([Bind("Id,Ad,Nufus")] Ulke ulke)
        {
            if (ModelState.IsValid)
            {
                _context.Add(ulke);
                await _context.SaveChangesAsync();

                return(RedirectToAction(nameof(Index)));
            }
            return(View(ulke));
        }
        public async Task <IActionResult> Duzenle(KoronaBilgi koronaBilgi)
        {
            if (ModelState.IsValid)
            {
                //_db.Entry(koronaBilgi).State = EntityState.Modified;
                _db.Update(koronaBilgi);
                await _db.SaveChangesAsync();

                return(RedirectToAction("Index"));
            }
            ViewBag.Ulkeler = new SelectList(await _db.Ulkeler.ToListAsync(), "Id", "Ad");
            return(View(koronaBilgi));
        }