public static void ChargeMonth(Member m, int month, int year)
{
m.Sync();
DateTime s = PaymentRuler.ComputeStartDate(m, month, year);
DateTime e = PaymentRuler.ComputeEndDate(m, month, year);
MonthlyChargeModel mcm = new MonthlyChargeModel();
if(!mcm.Exists(m, s))
mcm.Insert(m, s, e);
}
