public ActionResult Create(string uid, string title)
 {
     DBHelper db = new DBHelper();
     ViewBag.Essay = db.GetEssyByUid_Title(uid, title);
     ViewBag.CommentList = db.GetCommentListByTitle(title);
     essay_uid = uid;
     essay_title = title;
     return View();
     //**************************************************************
 }
        public ActionResult Create(string content)
        {
            DBHelper db = new DBHelper();
            var uid = Session["UserId"].ToString();
            ViewBag.Essay = db.GetEssyByUid_Title(essay_uid, essay_title);

            //**************************************************************
            try
            {
                // TODO: Add insert logic here
                db.SqlExcute(CommentCreateSql(essay_title, content));
                ViewBag.CommentList = db.GetCommentListByTitle(essay_title);
                Response.Write("<script>alert('评论成功!')</script>");
                return View();
            }
            catch
            {
                return View();
            }
        }