c# 判断时间相等 dateDiff

c# 判断时间相等 dateDiff

1..net里没有dateDiff，要对比两个时间还真的很麻烦，一般情况下，datetime中的compare对比的是毫秒级的，想对比s,或d级的，似乎比较麻烦。

以下是对比相等的一个例子，如果是对比大小，还要转换，不好搞，呵呵。

(DateTime.Now.ToShortTimeString() == string.Format("{0}:{1}", cboHour.Text.Trim(), cboMinute.Text.Trim()))

2.在vb里，我们可以很轻松地对比任何时间，dateDiff,能否在.net里也来个dateDiff呢？

  答案是肯定的。下面就是个dateDiff类:

 public sealed class DateTimeManger
    {
        private DateTimeManger()
        { }//end of default constructor
        public static long DateDiff(DateInterval Interval, System.DateTime StartDate, System.DateTime EndDate)
        {
            long lngDateDiffValue = 0;
            System.TimeSpan TS = new System.TimeSpan(EndDate.Ticks - StartDate.Ticks);
            switch (Interval)
            {
                case DateInterval.Second:
                    lngDateDiffValue = (long)TS.TotalSeconds;
                    break;
                case DateInterval.Minute:
                    lngDateDiffValue = (long)TS.TotalMinutes;
                    break;
                case DateInterval.Hour:
                    lngDateDiffValue = (long)TS.TotalHours;
                    break;
                case DateInterval.Day:
                    lngDateDiffValue = (long)TS.Days;
                    break;
                case DateInterval.Week:
                    lngDateDiffValue = (long)(TS.Days / 7);
                    break;
                case DateInterval.Month:
                    lngDateDiffValue = (long)(TS.Days / 30);
                    break;
                case DateInterval.Quarter:
                    lngDateDiffValue = (long)((TS.Days / 30) / 3);
                    break;
                case DateInterval.Year:
                    lngDateDiffValue = (long)(TS.Days / 365);
                    break;
            }
            return (lngDateDiffValue);
        }//end of DateDiff
    }//end of class

喜欢的朋友，可以拿去直接用，呵呵。Q:302777528