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);
}
