private static void WritePayslipsToCsv(List <Payslip> payslips, string filename) { var lines = new List <string>() { "name,pay period,gross income,income tax,net income,super" }; lines.AddRange(payslips.Select(payslip => CsvFormatter.CreateCsvLineFromPayslip(payslip))); CsvReaderWriter.WriteLines(filename, lines); }