在C#中實現(xiàn)DateDiff()方法
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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) { //也可以以字符串方式傳入日期，然后將日期字符串轉換為日期對象 //DateTime t1 = Convert.ToDateTime(StartDate); //DateTime t2 = Convert.ToDateTime(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 classSamples: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 class
該文章在 2021/3/8 9:42:09 編輯過 |
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