public ActionResult Create(Comment comment)
        {
            if (ModelState.IsValid)
            {
                db.Comments.Add(comment);
                db.SaveChanges();
                return RedirectToAction("Post", "Blog", new { id = comment.PostID });
            }

            return View(comment);
        }
 public ActionResult Edit(Comment comment)
 {
     if (ModelState.IsValid)
     {
         db.Entry(comment).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     return View(comment);
 }
 //
 // GET: /Comment/Create
 public ActionResult Create(int postID)
 {
     Comment comment = new Comment();
     comment.PostID = postID;
     return View(comment);
 }