商务/假日日期处理

Question

我正在寻找一个Date::Manip与业务/假日日期类似的Perl模块的C#类/库.在Perl中使用该模块,我可以传递一个日期并查明它是一个工作日(即周一至周五)还是假日.在配置文件中定义假期非常简单(请参阅参考资料Date::Manip::Holidays).您可以输入适用于每年的"固定"日期,例如:

12/25                           = Christmas

或者每年的"动态"日期,如:

last Monday in May              = Memorial Day

或者给定年份的"固定"日期,如:

5/22/2010                       = Bob's Wedding

您还可以传递日期并返回下一个/上一个工作日.

有没有人知道C#世界中有类似的东西？我发现了一些实现我需要的部分的东西(http://www.codeproject.com/KB/cs/busdatescalculation.aspx和http://www.codeproject.com/KB/dotnet/HolidayCalculator. aspx)我可以将它们拆开并制作我需要的东西.但如果其他人已经这样做了,为什么还要这样呢？

Answer 1

Nager.Date支持超过90个国家(美国,德国,法国,法国,英国,...),该库可用于.net45和.netstandard 2.0.完整的国家/地区列表可在github页面上找到.

的NuGet

PM> install-package Nager.Date

例:

获取一年的所有公共假日

var publicHolidays = DateSystem.GetPublicHoliday(2018, CountryCode.DE);

检查公共假日的日期

var date = new DateTime(2018, 01, 01);
if (DateSystem.IsPublicHoliday(date, CountryCode.DE))
{
    //Yes - New Year's Day
}

Answer 2

派对有点晚了,但想想它会帮助其他人搜索它.在http://geekswithblogs.net/wpeck/archive/2011/12/27/us-holiday-list-in-c.aspx上找到了一个很好的答案.它甚至考虑到周末假期.

private static HashSet<DateTime> GetHolidays(int year) 
    { 
        HashSet<DateTime> holidays = new HashSet<DateTime>();

        // New Years
        DateTime newYearsDate = AdjustForWeekendHoliday(new DateTime(year, 1, 1)); 
        holidays.Add(newYearsDate); 

        // Memorial Day -- last monday in May 
        DateTime memorialDay = new DateTime(year, 5, 31); 
        DayOfWeek dayOfWeek = memorialDay.DayOfWeek; 
        while (dayOfWeek != DayOfWeek.Monday) 
        { 
            memorialDay = memorialDay.AddDays(-1); 
            dayOfWeek = memorialDay.DayOfWeek; 
        } 
        holidays.Add(memorialDay); 

        // Independence Day
        DateTime independenceDay = AdjustForWeekendHoliday(new DateTime(year, 7, 4)); 
        holidays.Add(independenceDay); 

        // Labor Day -- 1st Monday in September 
        DateTime laborDay = new DateTime(year, 9, 1); 
        dayOfWeek = laborDay.DayOfWeek; 
        while(dayOfWeek != DayOfWeek.Monday) 
        { 
            laborDay = laborDay.AddDays(1); 
            dayOfWeek = laborDay.DayOfWeek; 
        } 
        holidays.Add(laborDay);

        // Thanksgiving Day -- 4th Thursday in November 
        var thanksgiving = (from day in Enumerable.Range(1, 30) 
                       where new DateTime(year, 11, day).DayOfWeek == DayOfWeek.Thursday 
                       select day).ElementAt(3); 
        DateTime thanksgivingDay = new DateTime(year, 11, thanksgiving); 
        holidays.Add(thanksgivingDay);

        // Christmas Day 
        DateTime christmasDay = AdjustForWeekendHoliday(new DateTime(year, 12, 25)); 
        holidays.Add(christmasDay); 

        // Next year's new years check
        DateTime nextYearNewYearsDate = AdjustForWeekendHoliday(new DateTime(year + 1, 1, 1));
        if (nextYearNewYearsDate.Year == year)
        holidays.Add(nextYearNewYearsDate);

        return holidays; 
    }

    public static DateTime AdjustForWeekendHoliday(DateTime holiday) 
    { 
        if (holiday.DayOfWeek == DayOfWeek.Saturday) 
        { 
            return holiday.AddDays(-1); 
        } 
        else if (holiday.DayOfWeek == DayOfWeek.Sunday) 
        { 
            return holiday.AddDays(1); 
        } 
        else 
        { 
            return holiday; 
        } 
    }

Answer 3

我找不到任何完全符合我想要的功能，因此我使用了http://www.codeproject.com/KB/dotnet/HolidayCalculator.aspx中的代码并对其进行了修改以满足我的需求。它完成了我需要的大部分功能，因此不需要太多调整。