public IHttpActionResult AddAllClass([FromBody] List <Models.Class> lstclass) { try { if (ModelState.IsValid) { return(Content(HttpStatusCode.OK, new DataModel() { HttpStatusCode = HttpStatusCode.OK, Exception = null, Data = professorService.PostAllClass(lstclass) })); } else { return(BadRequest(ModelState)); } } catch (Exception ex) { return(InternalServerError(ex)); } }