public ActionResult AddComment(BlogViewModel model) { bool isAdded = false; string error = ""; try { if (ModelState.IsValid) { var posts = GetPostsFromSession(); var comment = new Comment() { Name = model.Comment.Name, Email = model.Comment.Email, Date = DateTime.UtcNow, Message = model.Comment.Message }; model.Comment.Date = DateTime.UtcNow.ToString("MMMM dd, yyyy HH:mm"); var comments = posts.Where(p => p.ID == model.Comment.BlogID).FirstOrDefault().Comments; if (comments == null) { comments = new List <Comment>(); } comments.Add(comment); posts.Where(p => p.ID == model.Comment.BlogID).FirstOrDefault().Comments = comments; isAdded = postsService.SaveAll(posts); if (isAdded) { TempData["blogPosts"] = JsonConvert.SerializeObject(posts); } } } catch (Exception ex) { error = ex.Message.ToString(); } return(Json(new { IsAdded = isAdded, Comment = model.Comment, Exception = error }, JsonRequestBehavior.AllowGet)); }