How to set working days for school projects

The easiest way is probably something like

DateTime start = new DateTime(2008, 10, 3);
DateTime end = new DateTime(2008, 12, 31);
int workingDays = 0;
while( start < end ) {
  if( start.DayOfWeek != DayOfWeek.Saturday
   && start.DayOfWeek != DayOfWeek.Sunday ) {
      workingDays++;
  }
  start = start.AddDays(1);
}



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