public ActionResult City(int areaId)
        {
            if (Request.IsAjaxRequest() && areaId > 0)
            {
                string show = "<option value=\"0\">--请选择详细地址--</option>";
                var    list = publishService.GetCitys(areaId);
                var    json = from p in list
                              select string.Format("<option value=\"{0}\">{1}</option>", p.CityId, p.CityName);

                return(Json(show + string.Join("", json), JsonRequestBehavior.DenyGet));
            }
            else
            {
                return(new ContentResult()
                {
                    Content = "Access Forbidden!"
                });
            }
        }