.net - c# time-slot calculation (today-givenDate) -


i preparing class calculates penalty library. example: have book. return book 12.11.2009. delay return date. returned book on 30.11.2009. pay penalty money. how can count (november 31 - november 12) on c#?

penalty should calculated business days only. means calculation should take account of weekends , national holidays.

    <holiday date="25.11.2009"/>     <holiday date="26.11.2009"/>     <holiday date="27.11.2009"/> 

public int countbusinessdaysbetween(datetime start, datetime end) {     int days = end.subtract(start).days;     return enumerable.range(0, days)                      .select(day => start.adddays(day))                      .where(date => date.isbusinessday())                      .count(); }

of course, you have code isbusinessday yourself. don't know definition of business day is. it's highly localized.

also, don't know if want count inclusively or not, might need + 1 on definition of days if so.


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