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Find the count of a weekday between two dates without iterating/looping

, 11 Nov 2011
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Is it easier to start from the next targeted day? Subtract that date from the end date. If the result is negative, return 0 otherwise return the quotient of the difference in days between the two dates divided by 7 plus 1.public static int findWeekCount(DateTime startDate, DateTime toDate,...

Is it easier to start from the next targeted day? Subtract that date from the end date. If the result is negative, return 0 otherwise return the quotient of the difference in days between the two dates divided by 7 plus 1.

public static int findWeekCount(DateTime startDate, DateTime toDate, DayOfWeek dayOfWeek)
{
    DateTime firstTargetDate = startDate+ TimeSpan.FromDays(7 + (int)dayOfWeek - ((int)startDate.DayOfWeek) % 7);
    return (toDate - firstTargetDate).Days < 0 ? 0 : (((toDate - firstTargetDate).Days) / 7) + 1 ;
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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George Swan
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Wales Wales
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Comments and Discussions

 
GeneralMathematically your suggestion and mine are same and one. O... PinmemberRavi LVS10-Nov-11 15:39 

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