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The author:(作者)delvpublished in(发表于) 2014/1/6 9:07:12 DateDiff,方法在C#中的实现_[Asp.Net教程]
public enum DateInterval{ Second, Minute, Hour, Day, Week, Month, Quarter, Year}
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
Samples:public class DateDiffCS{ public static void Main (string[] CmdLineArgs) { System.DateTime date1 = System.DateTime.Now; System.DateTime date2 = System.DateTime.Now.AddYears(2);
System.Console.Out.WriteLine("Days : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Day,date1,date2).ToString()); System.Console.Out.WriteLine("Hours : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Hour,date1,date2).ToString()); System.Console.Out.WriteLine("Minutes : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Minute,date1,date2).ToString()); System.Console.Out.WriteLine("Month : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Month,date1,date2).ToString()); System.Console.Out.WriteLine("Quarter : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Quarter,date1,date2).ToString()); System.Console.Out.WriteLine("Seconds : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Second,date1,date2).ToString()); System.Console.Out.WriteLine("Week : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Week,date1,date2).ToString()); System.Console.Out.WriteLine("Year : " + DateTimeManger.DateDiff (DateTimeManger.DateInterval.Year,date1,date2).ToString());
System.Console.In.ReadLine();
}
}//end of the classFrom: HP.Mahesh.UtilityManager.Libraries.DateTimeUtility
来源:网络
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