計算特定國家/地區的無假期工作日

Question

我一直在這裏搜索以找到解決問題的方法，但迄今未找到任何解決方案。 嗯，我發現了一些可以工作的parcial函數，但由於我是C＃中的新手，我需要一些幫助來合併所有代碼才能工作。 因此，我需要計算兩個日期之間的工作日，忽略週末和葡萄牙假期。 對於假期，我有這樣的代碼，返回所有葡萄牙假期：

public static List<DateTime> GetHolidays(int year) 
    { 
     List<DateTime> result = new List<DateTime>(); 

     result.Add(new DateTime(year, 1, 1)); //New Year Day 
     result.Add(new DateTime(year, 4, 25)); //Dia da Liberdade (PT) 
     result.Add(new DateTime(year, 5, 1)); //Labour Day 
     result.Add(new DateTime(year, 6, 10)); //Dia de Portugal (PT) 
     result.Add(new DateTime(year, 8, 15)); //Assumption of Mary 
     result.Add(new DateTime(year, 10, 5)); //Implantação da república (PT) 
     result.Add(new DateTime(year, 11, 1)); //All Saints' Day 
     result.Add(new DateTime(year, 12, 1)); //Restauração da independência (PT) 
     result.Add(new DateTime(year, 12, 8)); //Imaculada Conceição (PT?) 
     result.Add(new DateTime(year, 12, 25)); //Christmas 
     foreach (DateTime holiday in variable) 
     { 
      if (!result.Contains(holiday)) //if the holiday already exists then don't add 
      { 
       result.Add(holiday); 
      } 
     } 
     return result; 
    } 

而我的函數來計算工作日內這一個我發現這裏的計算器：

public static int BusinessDaysUntil(this DateTime firstDay, DateTime lastDay, params DateTime[] bankHolidays) 
    { 
     firstDay = firstDay.Date; 
     lastDay = lastDay.Date; 
     if (firstDay > lastDay) 
      throw new ArgumentException("Incorrect last day " + lastDay); 

     TimeSpan span = lastDay - firstDay; 
     int businessDays = span.Days + 1; 
     int fullWeekCount = businessDays/7; 
     // find out if there are weekends during the time exceedng the full weeks 
     if (businessDays > fullWeekCount * 7) 
     { 
      // we are here to find out if there is a 1-day or 2-days weekend 
      // in the time interval remaining after subtracting the complete weeks 
      int firstDayOfWeek = (int)firstDay.DayOfWeek; 
      int lastDayOfWeek = (int)lastDay.DayOfWeek; 
      if (lastDayOfWeek < firstDayOfWeek) 
       lastDayOfWeek += 7; 
      if (firstDayOfWeek <= 6) 
      { 
       if (lastDayOfWeek >= 7)// Both Saturday and Sunday are in the remaining time interval 
        businessDays -= 2; 
       else if (lastDayOfWeek >= 6)// Only Saturday is in the remaining time interval 
        businessDays -= 1; 
      } 
      else if (firstDayOfWeek <= 7 && lastDayOfWeek >= 7)// Only Sunday is in the remaining time interval 
       businessDays -= 1; 
     } 

     // subtract the weekends during the full weeks in the interval 
     businessDays -= fullWeekCount + fullWeekCount; 

     // subtract the number of bank holidays during the time interval 
     foreach (DateTime bankHoliday in bankHolidays) 
     { 
      DateTime bh = bankHoliday.Date; 
      if (firstDay <= bh && bh <= lastDay) 
       --businessDays; 
     } 

     return businessDays; 
    } 

但是，該代碼使用DateTime [] bankHolidays和我需要改變它以考慮我的假期（GetHolidays（））。 你能幫我改變一下代碼嗎？ 謝謝

Answer 1

至於我可以看到，這是一個日期（例如，5月1日），而不是一年的事情，這是我們忽略（設置爲1）：在同一個日期

private static List<DateTime> PortugueseHolidays = new List<DateTime>() { 
    new DateTime(1, 1, 1)), //New Year Day 
    new DateTime(1, 4, 25), //Dia da Liberdade (PT) 
    new DateTime(1, 5, 1), //Labour Day 
    new DateTime(1, 6, 10), //Dia de Portugal (PT) 
    new DateTime(1, 8, 15), //Assumption of Mary 
    new DateTime(1, 10, 5), //Implantação da república (PT) 
    new DateTime(1, 11, 1), //All Saints' Day 
    new DateTime(1, 12, 1), //Restauração da independência (PT) 
    new DateTime(1, 12, 8), //Imaculada Conceição (PT?) 
    new DateTime(1, 12, 25), //Christmas 
}; 

測試

private static Boolean IsHoliday(DateTime value, IEnumerable<DateTime> holidays = null) { 
    if (null == holidays) 
    holidays = PortugueseHolidays; 

    return (value.DayOfWeek == DayOfWeek.Sunday) || 
     (value.DayOfWeek == DayOfWeek.Saturday) || 
      holidays.Any(holiday => holiday.Day == value.Day && 
            holiday.Month == value.Month); 
} 

而對於範圍（fromDate包括，toDate排除）

public static int BusinessDaysUntil(this DateTime fromDate, 
            DateTime toDate, 
            IEnumerable<DateTime> holidays = null) { 
    int result = 0; 

    for (DateTime date = fromDate.Date; date < toDate.Date; date = date.AddDays(1)) 
    if (!IsHoliday(date, holidays)) 
     result += 1; 

    return result; 
} 

Answer 2

您的目標是將您的List轉換爲Array。更改GetHolidays功能如下：

public static DateTime[] GetHolidays(int year) 
{ 
    List<DateTime> result = new List<DateTime>(); 

    result.Add(new DateTime(year, 1, 1)); //New Year Day 
    result.Add(new DateTime(year, 4, 25)); //Dia da Liberdade (PT) 
    result.Add(new DateTime(year, 5, 1)); //Labour Day 
    result.Add(new DateTime(year, 6, 10)); //Dia de Portugal (PT) 
    result.Add(new DateTime(year, 8, 15)); //Assumption of Mary 
    result.Add(new DateTime(year, 10, 5)); //Implantação da república (PT) 
    result.Add(new DateTime(year, 11, 1)); //All Saints' Day 
    result.Add(new DateTime(year, 12, 1)); //Restauração da independência (PT) 
    result.Add(new DateTime(year, 12, 8)); //Imaculada Conceição (PT?) 
    result.Add(new DateTime(year, 12, 25)); //Christmas 
    foreach (DateTime holiday in variable) 
    { 
     if (!result.Contains(holiday)) //if the holiday already exists then don't add 
     { 
      result.Add(holiday); 
     } 
    } 
    return result.ToArray<DateTime>(); 
} 

呼叫使用GetHolidays()作爲最後一個參數BusinessDaysUntil功能。