相关疑难解决方法(0)

有舍入一个简单的函数UP一DateTime到最近的15分钟？

例如

2011-08-11 16:59 变 2011-08-11 17:00

2011-08-11 17:00 留下来 2011-08-11 17:00

2011-08-11 17:01 变 2011-08-11 17:15

例如:

2011-08-11 16:59成为2011-08-11 16:30

是否有功能将日期时间整理到最后一个季度？

例...

08:03:00 becomes 08:00:00

08:14:00 becomes 08:00:00

08:15:00 stays   08:15:00

08:16:00 becomes 08:15:00

08:29:00 becomes 08:15:00

08:45:00 stays   08:45:00 

08:55:00 becomes 08:45:00

09:01:00 becomes 09:00:00

我写了下面的函数,但它返回下一季 ...

private DateTime RoundUpToPreviousQuarter(DateTime date, TimeSpan d)
{
      return new DateTime(((date.Ticks + d.Ticks - 1) / d.Ticks) * d.Ticks);
}

// call the method
this.RoundUp(time, TimeSpan.FromMinutes(15));

任何投入都赞赏.