Whenever I Enter an invalid entry, the code catches the exception but updates the view anyways, please help me fix this .

public ActionResult ManagePortfolioGridCreate([DataSourceRequest] DataSourceRequest request, ManagePortfolioGridViewModel vm) { try { var result =_adminBll.CreatePortfolio(vm); return Json(new[] { result }.ToDataSourceResult(request, ModelState));

} catch (Exception e) { Log.Error(e.Message);

ModelState.AddModelError(string.Empty, e.Message); return Json(new[] { vm }.ToDataSourceResult(request, ModelState));

}

}