public ActionResult GetSub(string CapDoID) { var account = Session[CommonHeader.ssAccount] as ZEMP_USER; List <SelectListItem> items = new List <SelectListItem>(); if (CapDoID != "") { AccountDTO accDO = new AccountDTO(); items = accDO.GetListGiaTriCapDo(account, CapDoID); } // you may replace the above code with data reading from database based on the id return(Json(items, JsonRequestBehavior.AllowGet)); }