Is last working day?

Question

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Hi,
The following c# code tells you if the date is the last day of the month.
Question:
How can I get the last WORKING day of the month?
for example, for march, th elast day is saturday which is 31st. But I want the code to return 30th which is the last working day of march.
Thanks

C#

private bool IsLastDayOfMonth(DateTime dtDate)
        {
            DateTime dtTo = dtDate.Date;
            dtTo = dtTo.AddMonths(1);
            // remove all of the days in the next month 
            // to get bumped down to the last day of the 
            // previous month 
            dtTo = dtTo.AddDays(-(dtTo.Day));

            if (dtDate.Date == dtTo)
            {
                return true;
            }
            else
            {
                return false;
            }
        }

Posted 27-Mar-12 21:14pm

arkiboys

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arkiboys 28-Mar-12 5:08am

Thank you

1 solution

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Jani Giannoudis · Accepted Answer · 2012-03-27T21:40:00

Try this:

C#

// ----------------------------------------------------------------------
private static DateTime LastDayOfMonth( int year, int month )
{
  return new DateTime( year, month, DateTimeFormatInfo.CurrentInfo.Calendar.GetDaysInMonth( year, month ) );
} // LastDayOfMonth

// ----------------------------------------------------------------------
private static bool IsLastDayOfMonth( DateTime test )
{
  DateTime lastDayOfMonth = LastDayOfMonth( test.Year, test.Month );
  return test.Day == lastDayOfMonth.Day;
} // IsLastDayOfMonth

// ----------------------------------------------------------------------
private static bool IsLastWorkingDayOfMonth( DateTime test )
{
  DateTime lastWorkingDayOfMonth = LastDayOfMonth( test.Year, test.Month );
  while ( lastWorkingDayOfMonth.DayOfWeek == DayOfWeek.Saturday || 
    lastWorkingDayOfMonth.DayOfWeek == DayOfWeek.Sunday )
  {
    lastWorkingDayOfMonth = lastWorkingDayOfMonth.AddDays( -1 );
  }

  return test.Day == lastWorkingDayOfMonth.Day;
} // IsLastWorkingDayOfMonth