public IActionResult Create(Comment comment)
        {
            if (comment.ID != 0)
                comment.ID = 0;

            if (ModelState.IsValid)
            {
                _context.Comment.Add(comment);
                _context.SaveChanges();
                return RedirectToAction("Index");
            }
            return View(comment);
        }
 public IActionResult Edit(Comment comment)
 {
     if (ModelState.IsValid)
     {
         _context.Update(comment);
         _context.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(comment);
 }