public IEnumerable <ReportItem <TValue> > GenerateByPersianMonth <TValue>(System.DateTime?from = null, System.DateTime?to = null)
{
System.DateTime f = from ?? _MIN, t = to ?? _MAX;
while (f < t)
{
var pf = f.ToPersianDate();
yield return(new ReportItem <TValue>
{
Key = pf.Year * 100 + pf.Month,
Month = pf.Month,
MonthName = DateUtility.GetPersianMonthName(pf.Month),
Year = pf.Year,
});
f = pf.AddMonths(1).ToDateTime();
}
}
