Timespan包含leap年 [英] Timespan contains leapyear

问题描述

我有2个日期，开始(1/1/15)，结束(31/12/16)

I have 2 dates, a start (1/1/15) an end (31/12/16)

我需要从总金额(20,000)和每年的总金额(以365天为基础)计算每天的金额，

I need to calculate an amount per day from a total amount (20,000) and a annual amount based on 365 days,

我正在使用Timespan获取开始日期和结束日期之间的日期，但是在这种情况下，由于2006年是a年，因此它返回731(365 + 366)，

I'm using Timespan to get the days between start and end dates, but in this case it returns 731 (365 + 366) as 2006 is a leap year,

但是我需要的是在没有the日的情况下获得730，有什么办法做到

but what I need is to get 730 without the leap day, is there any way of doing this

谢谢

推荐答案

也许有一种更有效的方法，但是可以按预期工作:

Perhaps there is a more efficient approach but this works as expected:

public static int DaysDiffMinusLeapYears(DateTime dt1, DateTime dt2)
{
    DateTime startDate = dt1 <= dt2 ? dt1.Date : dt2.Date;
    DateTime endDate = dt1 <= dt2 ? dt2.Date : dt1.Date;
    int days = (endDate - startDate).Days + 1;

    int daysDiff = Enumerable.Range(0, days)
        .Select(d => startDate.AddDays(d))
        .Count(day => day.Day != 29 || day.Month != 2);
    return daysDiff;
}

您的样本:

int days = DaysDiffMinusLeapYears(new DateTime(15, 1, 1), new DateTime(16,12,31));

结果:730

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