public FileContentResult ExportToExcel(int month)
        {
            var title = month > 12 ? "Budget Data" : "Budget Data for " + CultureInfo.CurrentCulture.DateTimeFormat.GetMonthName(month);
            var exportToExcelViewModel = _unitOfWork.BudgetItemsRepository.GenerateExportToExcelViewModel(User.Identity.Name, month);
            List <TransactionData> transactionDataList = exportToExcelViewModel.TransactionDataList;

            byte[] fileContent = ExportToExcelHelper.ExportExcel(transactionDataList, title, true);
            return(File(fileContent, ExportToExcelHelper.ExcelContentType, "BudgetData.xlsx"));
        }