计算下个月的最后一天

5 回答

• 10

  DateTime reference = DateTime.Now;
  DateTime firstDayThisMonth = new DateTime(reference.Year, reference.Month, 1);
  DateTime firstDayPlusTwoMonths = firstDayThisMonth.AddMonths(2);
  DateTime lastDayNextMonth = firstDayPlusTwoMonths.AddDays(-1);
  DateTime endOfLastDayNextMonth = firstDayPlusTwoMonths.AddTicks(-1);
  

  演示：http://rextester.com/AKDI52378

  回复于 2024-04-26T21:43:13+08:00
• 0

  //system date or any date u want this case it is a calendar picker - 22/03/2016
  DateTime today = dtpFrom.Value;
  
  //Add a month to your date example , it now becomes - 22/04/2016
  DateTime endOfMonth = new DateTime(today.Year, today.Month,today.Day).AddMonths(1);
  
  //Get the last date off the above which is - 30
  int getlastday = DateTime.DaysInMonth(endOfMonth.Year, endOfMonth.Month);
  
  //Now set the date to the value  which will be the last day off the next month - 30/04/2016
  DateTime newDate = new DateTime(endOfMonth.Year, endOfMonth.Month, getlastday);
  

  回复于 2024-04-26T21:43:13+08:00
• 0

  DateTime.DaysInMonth(DateTime.Now.AddMonths(1).Year, DateTime.Now.AddMonths(1).Month);
  

  回复于 2024-04-26T21:43:13+08:00
• 1

  var lastDayInNextMonth = DateTime.DaysInMonth(DateTime.Now.AddMonths(1).Year, DateTime.Now.AddMonths(1).Month );
  

  @本： DateTime.Now.AddMonths(1) 将 1 月添加到当前日期不减去 11 个月 .

  

  DateTime.Now.AddMonths(1).Year 将给出 2016 而不是 2015 参考附图

  回复于 2024-04-26T21:43:13+08:00
• 0

  试试这个：

  int Day= DateTime.DaysInMonth(DateTime.Now.Year, DateTime.Now.Month+1>12 ? 01 : DateTime.Now.Month+1 );
  

  回复于 2024-04-26T21:43:13+08:00