public JsonResult LoadThongTinHocSinh(int?HocSinh) { try { var TrungTam = Task.Run(() => db.APAX_GetTrungTamBayUserName(User.Identity.Name).FirstOrDefault()).Result; var model = db.TH_HOSOKHACHHANG.FirstOrDefault(it => it.A_HOSOKHACHHANG == HocSinh); model.ID_TRUNGTAM = TrungTam.TrungTam; model.MATRUNGTAM = TrungTam.MA_DVCS; if (model != null) { return(Json(model, JsonRequestBehavior.AllowGet)); } else { return(Json(null, JsonRequestBehavior.AllowGet)); } } catch { return(Json(null, JsonRequestBehavior.AllowGet)); } }