C# DateTime显示时间格式的使用

DateTime.ToString() Patterns 
All the patterns: 
0 MM/dd/yyyy 08/22/2006  
1 dddd, dd MMMM yyyy Tuesday, 22 August 2006  
2 dddd, dd MMMM yyyy HH:mm Tuesday, 22 August 2006 06:30  
3 dddd, dd MMMM yyyy hh:mm tt Tuesday, 22 August 2006 06:30 AM  
4 dddd, dd MMMM yyyy H:mm Tuesday, 22 August 2006 6:30  
5 dddd, dd MMMM yyyy h:mm tt Tuesday, 22 August 2006 6:30 AM  
6 dddd, dd MMMM yyyy HH:mm:ss Tuesday, 22 August 2006 06:30:07  
7 MM/dd/yyyy HH:mm 08/22/2006 06:30  
8 MM/dd/yyyy hh:mm tt 08/22/2006 06:30 AM  
9 MM/dd/yyyy H:mm 08/22/2006 6:30  
10 MM/dd/yyyy h:mm tt 08/22/2006 6:30 AM  
10 MM/dd/yyyy h:mm tt 08/22/2006 6:30 AM  
10 MM/dd/yyyy h:mm tt 08/22/2006 6:30 AM  
11 MM/dd/yyyy HH:mm:ss 08/22/2006 06:30:07 
12 MMMM dd August 22  
13 MMMM dd August 22  
14 yyyy'-'MM'-'dd'T'HH':'mm':'ss.fffffffK 2006-08-22T06:30:07.7199222-04:00  
15 yyyy'-'MM'-'dd'T'HH':'mm':'ss.fffffffK 2006-08-22T06:30:07.7199222-04:00  
16 ddd, dd MMM yyyy HH':'mm':'ss 'GMT' Tue, 22 Aug 2006 06:30:07 GMT  
17 ddd, dd MMM yyyy HH':'mm':'ss 'GMT' Tue, 22 Aug 2006 06:30:07 GMT  
18 yyyy'-'MM'-'dd'T'HH':'mm':'ss 2006-08-22T06:30:07  
19 HH:mm 06:30  
20 hh:mm tt 06:30 AM  
21 H:mm 6:30  
22 h:mm tt 6:30 AM  
23 HH:mm:ss 06:30:07  
24 yyyy'-'MM'-'dd HH':'mm':'ss'Z' 2006-08-22 06:30:07Z  
25 dddd, dd MMMM yyyy HH:mm:ss Tuesday, 22 August 2006 06:30:07  
26 yyyy MMMM 2006 August  
27 yyyy MMMM 2006 August  

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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年ｨｺ11月?5日?
//    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();//问ｨｺ号?为a一?个?时骸间?段?
//    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年ｨｺ11月?
//    Label4.Text = dt.GetDateTimeFormats('D')[0].ToString();//2005年ｨｺ11月?5日?
//    Label5.Text = dt.GetDateTimeFormats('D')[1].ToString();//2005 11 05
//    Label6.Text = dt.GetDateTimeFormats('D')[2].ToString();//星?期ｨｲ六ⅷ?2005 11 05
//    Label7.Text = dt.GetDateTimeFormats('D')[3].ToString();//星?期ｨｲ六ⅷ?2005年ê11月?5日?
//    Label8.Text = dt.GetDateTimeFormats('M')[0].ToString();//11月?5日ｨ?
//    Label9.Text = dt.GetDateTimeFormats('f')[0].ToString();//2005年ｨｺ11月?5日? 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年ｨｺ11月?5日?
    Label3.Text =   string.Format("{0:f}",dt);//2005年ｨｺ11月?5日? 14:23
    Label4.Text =   string.Format("{0:F}",dt);//2005年ｨｺ11月?5日? 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月?5日ｨ?
    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年ｨｺ11月?5日? 6:23:23
    Label14.Text = string.Format("{0:Y}",dt);//2005年ｨｺ11月?
    Label15.Text = string.Format("{0}",dt);//2005-11-5 14:23:23
    Label16.Text = string.Format("{0:yyyyMMddHHmmssffff}",dt);