C#.Net 从当前日期获取上个月的最后一天

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时间:2020-08-06 09:08:14  来源:igfitidea点击:

C#.Net Getting Last day of the Previous Month from current date

c#.net

提问by Julius A

A quick expression anyone please?

任何人都可以快速表达吗?

采纳答案by Seb Nilsson

var now = DateTime.Now;    
var firstDayCurrentMonth = new DateTime(now.Year, now.Month, 1);

var lastDayLastMonth = firstDayCurrentMonth.AddDays(-1);

回答by LukeH

DateTime now = DateTime.Now;
DateTime lastDayOfLastMonth = now.Date.AddDays(-now.Day);

回答by Richard McGuire

Try the DateTime.DaysInMonth(int year, int month) method

尝试DateTime.DaysInMonth(int year, int month) 方法

Here's an example:

下面是一个例子:

DateTime oneMonthAgo = DateTime.Now.AddMonths(-1);
int days = DateTime.DaysInMonth(oneMonthAgo.Year, oneMonthAgo.Month);