public ActionResult EditComment(Comment comment)
 {
     if (ModelState.IsValid)
     {
         _blogUnitOf.Comment.Update(comment);
         _blogUnitOf.Save();
         return RedirectToAction("ViewAPost", "Post", new { id= comment.PostId });
     }
     return View();
 }
 public ActionResult CreateComment(Int64 id, Comment comment)
 {
     if (ModelState.IsValid)
     {
         comment.DateCreate = DateTime.Now;
         comment.PostId = id;
         _blogUnitOf.Comment.Add(comment);
         _blogUnitOf.Save();
         return RedirectToAction("ViewAPost", "Post", new {id});
     }
     return View();
 }