如何在C#中获得本月的最后一天？

Question

如何在C#中找到该月的最后一天？

Answer 1

另一种方式:

DateTime today = DateTime.Today;
DateTime endOfMonth = new DateTime(today.Year, 
                                   today.Month, 
                                   DateTime.DaysInMonth(today.Year, 
                                                        today.Month));

Answer 2

就像是:

DateTime today = DateTime.Today;
DateTime endOfMonth = new DateTime(today.Year, today.Month, 1).AddMonths(1).AddDays(-1);

也就是说,你得到下个月的第一天,然后减去一天.框架代码将处理月份长度,闰年等事情.

Answer 3

public static class DateTimeExtensions
{
    public static DateTime LastDayOfMonth(this DateTime date)
    {
        return date.AddDays(1-(date.Day)).AddMonths(1).AddDays(-1);
    }
}

Answer 4

DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month)