public ContractPeriod(DateTime date, ContractPeriod nextContract = default(ContractPeriod)) { MonthYear = (date.Year * 12) + date.Month; NextMonthYear = nextContract; }
public ContractPeriod(int month, int year, ContractPeriod nextContract = default(ContractPeriod)) { MonthYear = (year * 12) + month; NextMonthYear = nextContract; }