public ActionResult Customer(CustomerReportViewModel reportViewModel)
        {
            var transactionsList = _transactionsManagement.GetTransactions(reportViewModel.Customer,
                                                                           reportViewModel.BeginningDate,
                                                                           reportViewModel.EndingDate);
            var tList = ReportInfoFromList(transactionsList);
            using (var excelPackage = new ExcelPackage())
            {
                var worksheet = excelPackage.Workbook.Worksheets.Add("Primera Hoja");

                //Here we have to select one of the following options: Manual or Auto writting
                //With the auto option, we should create a new class to avoid the complex objects mapping problems
                //instead of using the simple Transaction Class

                //1. Manual

                worksheet.Cells["A1"].Value = CODIGO_FACTURA;
                worksheet.Cells["B1"].Value = MONTO;
                worksheet.Cells["C1"].Value = PUNTOS;
                worksheet.Cells["D1"].Value = CODIGO_SAR;
                worksheet.Cells["E1"].Value = NOMBRE_VENDEDOR;
                worksheet.Cells["F1"].Value = FECHA;
                //worksheet.Cells["G1"].Value = TIENDA;
                worksheet.Cells["G1"].Value = COMPANIA;
                /*
                int i = 2;
                foreach (var transaction in transactionsList)
                {
                    worksheet.Cells["A" + i].Value = transaction.Amount;
                    worksheet.Cells["B" + i].Value = transaction.Amount;
                    i++;
                }
                 */
                //2. Automatic
                if (tList != null && tList.Count() != 0)
                {
                    worksheet.Cells["A2"].LoadFromCollection(tList);
                }

                return File(excelPackage.GetAsByteArray(), "application/vnd.ms-excel", "a_cool_name.xls");
            }
        }
 public ActionResult Customer()
 {
     var orderedUsers = _usersManagement.GetOrderedUsersList();
     var usersToShow = GenerateUsersToShowList(orderedUsers);
     var customerReportViewModel = new CustomerReportViewModel
     {
         Customer = new User(),
         UsersToShowList = usersToShow,
     };
     return View(customerReportViewModel);
 }