相关疑难解决方法(0)

我想将DateTime四舍五入到最接近的5秒.这是我目前正在做的方式,但我想知道是否有更好或更简洁的方式？

DateTime now = DateTime.Now;
int second = 0;

// round to nearest 5 second mark
if (now.Second % 5 > 2.5)
{
    // round up
    second = now.Second + (5 - (now.Second % 5));
}
else
{
    // round down
    second = now.Second - (now.Second % 5);
}

DateTime rounded = new DateTime(now.Year, now.Month, now.Day, now.Hour, now.Minute, second);

请注意,我发现这 2个前面的问题,但他们截断而不是圆的时间.