C# datetime 输出格式

https://docs.microsoft.com/zh-cn/dotnet/api/system.datetime.tostring?view=netframework-4.8#System_DateTime_ToString_System_IFormatProvider_
https://www.cnblogs.com/polk6/p/5465088.html

C# datetime 输出格式
C# datetime 输出格式
C# datetime 输出格式

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Create an array of all supported standard date and time format specifiers.
      string[] formats = {"d", "D", "f", "F", "g", "G", "m", "o", "r", 
                          "s", "t", "T", "u", "U", "Y"};
      // Create an array of four cultures.                                 
      CultureInfo[] cultures = {CultureInfo.CreateSpecificCulture("de-DE"), 
                                CultureInfo.CreateSpecificCulture("en-US"), 
                                CultureInfo.CreateSpecificCulture("es-ES"), 
                                CultureInfo.CreateSpecificCulture("fr-FR")};
       // Define date to be displayed.
      DateTime dateToDisplay = new DateTime(2008, 10, 1, 17, 4, 32);

      // Iterate each standard format specifier.
      foreach (string formatSpecifier in formats)
      {
         foreach (CultureInfo culture in cultures)
            Console.WriteLine("{0} Format Specifier {1, 10} Culture {2, 40}", 
                              formatSpecifier, culture.Name, 
                              dateToDisplay.ToString(formatSpecifier, culture));
         Console.WriteLine();
      }   
   }
}
// The example displays the following output:
//    d Format Specifier      de-DE Culture                               01.10.2008
//    d Format Specifier      en-US Culture                                10/1/2008
//    d Format Specifier      es-ES Culture                               01/10/2008
//    d Format Specifier      fr-FR Culture                               01/10/2008
//    
//    D Format Specifier      de-DE Culture                Mittwoch, 1. Oktober 2008
//    D Format Specifier      en-US Culture              Wednesday, October 01, 2008
//    D Format Specifier      es-ES Culture         miércoles, 01 de octubre de 2008
//    D Format Specifier      fr-FR Culture                  mercredi 1 octobre 2008
//    
//    f Format Specifier      de-DE Culture          Mittwoch, 1. Oktober 2008 17:04
//    f Format Specifier      en-US Culture      Wednesday, October 01, 2008 5:04 PM
//    f Format Specifier      es-ES Culture   miércoles, 01 de octubre de 2008 17:04
//    f Format Specifier      fr-FR Culture            mercredi 1 octobre 2008 17:04
//    
//    F Format Specifier      de-DE Culture       Mittwoch, 1. Oktober 2008 17:04:32
//    F Format Specifier      en-US Culture   Wednesday, October 01, 2008 5:04:32 PM
//    F Format Specifier      es-ES Culture miércoles, 01 de octubre de 2008 17:04:3
//    F Format Specifier      fr-FR Culture         mercredi 1 octobre 2008 17:04:32
//    
//    g Format Specifier      de-DE Culture                         01.10.2008 17:04
//    g Format Specifier      en-US Culture                        10/1/2008 5:04 PM
//    g Format Specifier      es-ES Culture                         01/10/2008 17:04
//    g Format Specifier      fr-FR Culture                         01/10/2008 17:04
//    
//    G Format Specifier      de-DE Culture                      01.10.2008 17:04:32
//    G Format Specifier      en-US Culture                     10/1/2008 5:04:32 PM
//    G Format Specifier      es-ES Culture                      01/10/2008 17:04:32
//    G Format Specifier      fr-FR Culture                      01/10/2008 17:04:32
//    
//    m Format Specifier      de-DE Culture                               01 Oktober
//    m Format Specifier      en-US Culture                               October 01
//    m Format Specifier      es-ES Culture                               01 octubre
//    m Format Specifier      fr-FR Culture                                1 octobre
//    
//    o Format Specifier      de-DE Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      en-US Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      es-ES Culture              2008-10-01T17:04:32.0000000
//    o Format Specifier      fr-FR Culture              2008-10-01T17:04:32.0000000
//    
//    r Format Specifier      de-DE Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      en-US Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      es-ES Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    r Format Specifier      fr-FR Culture            Wed, 01 Oct 2008 17:04:32 GMT
//    
//    s Format Specifier      de-DE Culture                      2008-10-01T17:04:32
//    s Format Specifier      en-US Culture                      2008-10-01T17:04:32
//    s Format Specifier      es-ES Culture                      2008-10-01T17:04:32
//    s Format Specifier      fr-FR Culture                      2008-10-01T17:04:32
//    
//    t Format Specifier      de-DE Culture                                    17:04
//    t Format Specifier      en-US Culture                                  5:04 PM
//    t Format Specifier      es-ES Culture                                    17:04
//    t Format Specifier      fr-FR Culture                                    17:04
//    
//    T Format Specifier      de-DE Culture                                 17:04:32
//    T Format Specifier      en-US Culture                               5:04:32 PM
//    T Format Specifier      es-ES Culture                                 17:04:32
//    T Format Specifier      fr-FR Culture                                 17:04:32
//    
//    u Format Specifier      de-DE Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      en-US Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      es-ES Culture                     2008-10-01 17:04:32Z
//    u Format Specifier      fr-FR Culture                     2008-10-01 17:04:32Z
//    
//    U Format Specifier      de-DE Culture     Donnerstag, 2. Oktober 2008 00:04:32
//    U Format Specifier      en-US Culture   Thursday, October 02, 2008 12:04:32 AM
//    U Format Specifier      es-ES Culture    jueves, 02 de octubre de 2008 0:04:32
//    U Format Specifier      fr-FR Culture            jeudi 2 octobre 2008 00:04:32
//    
//    Y Format Specifier      de-DE Culture                             Oktober 2008
//    Y Format Specifier      en-US Culture                            October, 2008
//    Y Format Specifier      es-ES Culture                          octubre de 2008
//    Y Format Specifier      fr-FR Culture                             octobre 2008

C# datetime 输出格式

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