public ActionResult DeleteTrialIncomeArticle([DataSourceRequest] DataSourceRequest request, TrialIncomeArticle article)
        {
            if (article != null)
            {
                DataProvider.Delete(article);
            }

            return Json(new[] { article }.ToDataSourceResult(request, ModelState));
        }
        public ActionResult AddTrialIncomeArticle([DataSourceRequest] DataSourceRequest request, TrialIncomeArticle article)
        {
            if (article != null && ModelState.IsValid)
            {
                DataProvider.Add(article);
            }

            return Json(new[] { article }.ToDataSourceResult(request, ModelState));
        }