public ActionResult getProfessorGroups(int pIDCurso, int pIDSede, int pIDProfesor) { if (HttpContext.Request.IsAjaxRequest()) { var json = ""; var vPeriod = Request.Cookies["Periodo"].Value; var vIDPeriod = db.Periods.Find(int.Parse(vPeriod)).ID; var sp_getProfessorGroups = db.SP_Professor_Group(pIDCurso, pIDSede, vIDPeriod, pIDProfesor).ToList(); json = JsonConvert.SerializeObject(sp_getProfessorGroups); return(Content(json)); } return(new HttpStatusCodeResult(HttpStatusCode.BadRequest)); }