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//è·åæ¥æ+æ¶é´
DateTime.Now.ToString(); // 2008-9-4 20:02:10
DateTime.Now.ToLocalTime().ToString(); // 2008-9-4 20:12:12
//è·åæ¥æ
DateTime.Now.ToLongDateString().ToString(); // 2008å¹´9æ4æ¥
DateTime.Now.ToShortDateString().ToString(); // 2008-9-4
DateTime.Now.ToString("yyyy-MM-dd"); // 2008-09-04
DateTime.Now.Date.ToString(); // 2008-9-4 0:00:00
//è·åæ¶é´
DateTime.Now.ToLongTimeString().ToString(); // 20:16:16
DateTime.Now.ToShortTimeString().ToString(); // 20:16
DateTime.Now.ToString("hh:mm:ss"); // 08:05:57
DateTime.Now.TimeOfDay.ToString(); // 20:33:50.7187500
//å
¶ä»
DateTime.ToFileTime().ToString(); // 128650040212500000
DateTime.Now.ToFileTimeUtc().ToString(); // 128650040772968750
DateTime.Now.ToOADate().ToString(); // 39695.8461709606
DateTime.Now.ToUniversalTime().ToString(); // 2008-9-4 12:19:14
DateTime.Now.Year.ToString(); è·å年份 // 2008
DateTime.Now.Month.ToString(); è·åæ份 // 9
DateTime.Now.DayOfWeek.ToString(); è·åææ // Thursday
DateTime.Now.DayOfYear.ToString(); è·å第å 天 // 248
DateTime.Now.Hour.ToString(); è·åå°æ¶ // 20
DateTime.Now.Minute.ToString(); è·ååé // 31
DateTime.Now.Second.ToString(); è·åç§æ° // 45
//n为ä¸ä¸ªæ°,å¯ä»¥æ°æ´æ°,ä¹å¯ä»¥äºå°æ°
dt.AddYears(n).ToString(); //æ¶é´å nå¹´
dt.AddDays(n).ToString(); //å n天
dt.AddHours(n).ToString(); //å nå°æ¶
dt.AddMonths(n).ToString(); //å n个æ
dt.AddSeconds(n).ToString(); //å nç§
dt.AddMinutes(n).ToString(); //å nå