有没有更好的方法来修剪DateTime到一个特定的精度？

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将DateTime对象修剪到特定精度的最佳方法是什么？例如，如果我有一个值为'2008-09-29 09:41:43'的DateTime，但是我只想要精确到这一刻，有没有比这更好的方法？ p>

What's the best way to trim a DateTime object to a specific precision? For instance, if I have a DateTime with a value of '2008-09-29 09:41:43', but I only want it's precision to be to the minute, is there any better way to do it than this?

private static DateTime TrimDateToMinute(DateTime date) { return new DateTime( date.Year, date.Month, date.Day, date.Hour, date.Minute, 0); }

我真正想要的是使其变量，以便我可以设置它

What I would really want is to make it variable so that I could set its precision to the second, minute, hour, or day.

推荐答案

static class Program { //using extension method: static DateTime Trim(this DateTime date, long roundTicks) { return new DateTime(date.Ticks - date.Ticks % roundTicks); } //sample usage: static void Main(string[] args) { Console.WriteLine(DateTime.Now); Console.WriteLine(DateTime.Now.Trim(TimeSpan.TicksPerDay)); Console.WriteLine(DateTime.Now.Trim(TimeSpan.TicksPerHour)); Console.WriteLine(DateTime.Now.Trim(TimeSpan.TicksPerMillisecond)); Console.WriteLine(DateTime.Now.Trim(TimeSpan.TicksPerMinute)); Console.WriteLine(DateTime.Now.Trim(TimeSpan.TicksPerSecond)); Console.ReadLine(); } }