C#.Net从当前日期开始上个月的最后一天

Question

快速表达任何人都可以吗？

Answer 1

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

var lastDayLastMonth = firstDayCurrentMonth.AddDays(-1);

Answer 2

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