public ActionResult SubmitComment(FormCollection collection)
        {
            int shareId = int.Parse(collection["shareId"]);
            int parentId = int.Parse(collection["parentId"]);

            Comment commnet = new Comment();
            commnet.ShareId = shareId;
            commnet.ParentId = parentId;
            commnet.Description = collection["commentContent"];
            commnet.IsOriginal = false;
            commnet.CommentedBy = cookie.UserId;
            commnet.CommentedAt = DateTime.Now;

            //调试
            try
            {

                context.Comments.AddObject(commnet);
                context.SaveChanges();
            }
            catch (Exception e)
            {
                throw (e.InnerException);
            }

            var share = context.Shares.FirstOrDefault(x => x.ShareId == shareId);
            return View("_Comments",share);
        }
        public ActionResult Add(FormCollection collection)
        {
            string title = collection["title"];
            int categoryId = int.Parse(collection["category"]);
            string description = collection["description"];
            string url = collection["url"];
            string reason = collection["reason"];
            string score = collection["score"];

            //添加一个分享
            Share share = new Share();
            share.ShareNum = CommomHelper.GetRandomNum();
            share.Title = title;
            share.CategoryId = categoryId;
            share.Description = description;
            share.Url = url;
            share.SharedBy = cookie.UserId;
            share.SharedAt = DateTime.Now;

            context.Shares.AddObject(share);
            context.SaveChanges();

            //添加分享理由,即原始评论
            Comment comment = new Comment();
            comment.ShareId = share.ShareId;
            comment.Grade = int.Parse(score);
            comment.Description = reason;
            comment.IsOriginal = true;
            comment.CommentedBy = cookie.UserId;
            comment.CommentedAt = DateTime.Now;
            context.Comments.AddObject(comment);
            context.SaveChanges();

            return Redirect("/Home/Index");
        }