??????????????????????????????

???????磬DateTime.ToString("d") ???? DateTime ???

????“d”??????????????

????DateTime.ToString( "%d") ???????е????

????“%d”?????????.

????DateTime.ToString( "d ") ????????????????????????е????

????“d”???????????

????????????????????????????????????????????????????????????????????????????2005??06?? ????????????

????????????д: date.ToString("yyyy??MM??"?? DateTimeFormatInfo.InvariantInfo)???????

DateTime dt = DateTime.Now;
Label1.Text = dt.ToString();//2005-11-5 13:21:25
Label2.Text = dt.ToFileTime().ToString();//127756416859912816
Label3.Text = dt.ToFileTimeUtc().ToString();//127756704859912816
Label4.Text = dt.ToLocalTime().ToString();//2005-11-5 21:21:25
Label5.Text = dt.ToLongDateString().ToString();//2005??11??5??
Label6.Text = dt.ToLongTimeString().ToString();//13:21:25
Label7.Text = dt.ToOADate().ToString();//38661.5565508218
Label8.Text = dt.ToShortDateString().ToString();//2005-11-5
Label9.Text = dt.ToShortTimeString().ToString();//13:21
Label10.Text = dt.ToUniversalTime().ToString();//2005-11-5 5:21:25
?2005-11-5 13:30:28.4412864
Label1.Text = dt.Year.ToString();//2005
Label2.Text = dt.Date.ToString();//2005-11-5 0:00:00
Label3.Text = dt.DayOfWeek.ToString();//Saturday
Label4.Text = dt.DayOfYear.ToString();//309
Label5.Text = dt.Hour.ToString();//13
Label6.Text = dt.Millisecond.ToString();//441
Label7.Text = dt.Minute.ToString();//30
Label8.Text = dt.Month.ToString();//11
Label9.Text = dt.Second.ToString();//28
Label10.Text = dt.Ticks.ToString();//632667942284412864
Label11.Text = dt.TimeOfDay.ToString();//13:30:28.4412864
Label1.Text = dt.ToString();//2005-11-5 13:47:04
Label2.Text = dt.AddYears(1).ToString();//2006-11-5 13:47:04
Label3.Text = dt.AddDays(1.1).ToString();//2005-11-6 16:11:04
Label4.Text = dt.AddHours(1.1).ToString();//2005-11-5 14:53:04
Label5.Text = dt.AddMilliseconds(1.1).ToString();//2005-11-5 13:47:04
Label6.Text = dt.AddMonths(1).ToString();//2005-12-5 13:47:04
Label7.Text = dt.AddSeconds(1.1).ToString();//2005-11-5 13:47:05
Label8.Text = dt.AddMinutes(1.1).ToString();//2005-11-5 13:48:10
Label9.Text = dt.AddTicks(1000).ToString();//2005-11-5 13:47:04
Label10.Text = dt.CompareTo(dt).ToString();//0
//Label11.Text = dt.Add(?).ToString();//???????????
Label1.Text = dt.Equals("2005-11-6 16:11:04").ToString();//False
Label2.Text = dt.Equals(dt).ToString();//True
Label3.Text = dt.GetHashCode().ToString();//1474088234
Label4.Text = dt.GetType().ToString();//System.DateTime
Label5.Text = dt.GetTypeCode().ToString();//DateTime
Label1.Text = dt.GetDateTimeFormats('s')[0].ToString();//2005-11-05T14:06:25
Label2.Text = dt.GetDateTimeFormats('t')[0].ToString();//14:06
Label3.Text = dt.GetDateTimeFormats('y')[0].ToString();//2005??11??
Label4.Text = dt.GetDateTimeFormats('D')[0].ToString();//2005??11??5??
Label5.Text = dt.GetDateTimeFormats('D')[1].ToString();//2005 11 05
Label6.Text = dt.GetDateTimeFormats('D')[2].ToString();//?????? 2005 11 05
Label7.Text = dt.GetDateTimeFormats('D')[3].ToString();//?????? 2005??11??5??
Label8.Text = dt.GetDateTimeFormats('M')[0].ToString();//11??5??
Label9.Text = dt.GetDateTimeFormats('f')[0].ToString();//2005??11??5?? 14:06
Label10.Text = dt.GetDateTimeFormats('g')[0].ToString();//2005-11-5 14:06
Label11.Text = dt.GetDateTimeFormats('r')[0].ToString();//Sat?? 05 Nov 2005 14:06:25 GMT
Label1.Text =? string.Format("{0:d}"??dt);//2005-11-5
Label2.Text =? string.Format("{0:D}"??dt);//2005??11??5??
Label3.Text =? string.Format("{0:f}"??dt);//2005??11??5?? 14:23
Label4.Text =? string.Format("{0:F}"??dt);//2005??11??5?? 14:23:23
Label5.Text =? string.Format("{0:g}"??dt);//2005-11-5 14:23
Label6.Text =? string.Format("{0:G}"??dt);//2005-11-5 14:23:23
Label7.Text =? string.Format("{0:M}"??dt);//11??5??
Label8.Text =? string.Format("{0:R}"??dt);//Sat?? 05 Nov 2005 14:23:23 GMT
Label9.Text =? string.Format("{0:s}"??dt);//2005-11-05T14:23:23
Label10.Text = string.Format("{0:t}"??dt);//14:23
Label11.Text = string.Format("{0:T}"??dt);//14:23:23
Label12.Text = string.Format("{0:u}"??dt);//2005-11-05 14:23:23Z
Label13.Text = string.Format("{0:U}"??dt);//2005??11??5?? 6:23:23
Label14.Text = string.Format("{0:Y}"??dt);//2005??11??
Label15.Text = string.Format(""??dt);//2005-11-5 14:23:23?
Label16.Text = string.Format("{0:yyyyMMddHHmmssffff}"??dt);
//yyyymm??????????????Label16.Text = string.Format("{0:yyyyMMdd}"??dt);