public JsonResult Create(Workshop workshop, string userid)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    workshop.COMPANYSITE = int.Parse(Session["companysite"].ToString());
                    WS.Add(workshop, Session["userid"].ToString());
                }
            }
            catch
            {
                return(Json("error"));
            }

            return(Json("success"));
        }