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GetAllDateTimePatterns  
Method  
Gets string representations of all the DateTime formatting patterns
DateTimeFormatInfo Class
System.Globalization NameSpace
CF1.  Function GetAllDateTimePatterns : Array of String;
CF2.  Function GetAllDateTimePatterns ( PatternChar : Char ) : Array of String;
CF : Methods with this mark are Compact Framework Compatible
Description
Returns an array of all DateTime formatting patterns supported by .Net, or just those related to the given formatting PatternChar.
 
The PatternChar must be one of the following values :
 
Short Date, such as : 24/08/2004
Long date, such as 24 August 2004
Short time, such as 12:23
Long time, such as 12:23:45
Full datetime, such as 24 August 2004 12:23
Full datetime, such as 24 August 2004 12:23:45
General datetime, such as 24/08/2004 12:23
General datetime, such as 24/08/2004 12:23:45
M or m Month, such as 24 August
R or r Culture independant, such as Tue 24 August 2004 12:23:45 GMT
Sortable datetime, such as 2004-08-24T12:23:45
Universal sortable datetime
Y or y Year plus month, such as August 2004
Microsoft MSDN Links
System.Globalization
System.Globalization.DateTimeFormatInfo
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Listing all DateTime formatting strings
program Project1;
{$APPTYPE CONSOLE}

uses
  System.Globalization;

var
  britCulture    : System.Globalization.CultureInfo;

  dateTimeFormat : System.Globalization.DateTimeFormatInfo;

  patterns       : Array of String;
  i              : Integer;

begin
  // Set up British culture
  britCulture := CultureInfo.Create('en-GB');

  // Get the date time format for this culture
  dateTimeFormat := britCulture.DateTimeFormat;

  // Get the date time format patterns into an array
  patterns := dateTimeFormat.GetAllDateTimePatterns;

  // And display all the date time formats
  for i := 0 to Length(patterns)-1 do
    Console.WriteLine(patterns[i]);

  Console.ReadLine;
end.
   dd/MM/yyyy
   dd/MM/yy
   d/M/yy
   d.M.yy
   yyyy-MM-dd
   dd MMMM yyyy
   d MMMM yyyy
   dd MMMM yyyy HH:mm
   dd MMMM yyyy H:mm
   dd MMMM yyyy hh:mm tt
   dd MMMM yyyy h:mm tt
   d MMMM yyyy HH:mm
   d MMMM yyyy H:mm
   d MMMM yyyy hh:mm tt
   d MMMM yyyy h:mm tt
   dd MMMM yyyy HH:mm:ss
   dd MMMM yyyy H:mm:ss
   dd MMMM yyyy hh:mm:ss tt
   dd MMMM yyyy h:mm:ss tt
   d MMMM yyyy HH:mm:ss
   d MMMM yyyy H:mm:ss
   d MMMM yyyy hh:mm:ss tt
   d MMMM yyyy h:mm:ss tt
   dd/MM/yyyy HH:mm
   dd/MM/yyyy H:mm
   dd/MM/yyyy hh:mm tt
   dd/MM/yyyy h:mm tt
   dd/MM/yy HH:mm
   dd/MM/yy H:mm
   dd/MM/yy hh:mm tt
   dd/MM/yy h:mm tt
   d/M/yy HH:mm
   d/M/yy H:mm
   d/M/yy hh:mm tt
   d/M/yy h:mm tt
   d.M.yy HH:mm
   d.M.yy H:mm
   d.M.yy hh:mm tt
   d.M.yy h:mm tt
   yyyy-MM-dd HH:mm
   yyyy-MM-dd H:mm
   yyyy-MM-dd hh:mm tt
   yyyy-MM-dd h:mm tt
   dd/MM/yyyy HH:mm:ss
   dd/MM/yyyy H:mm:ss
   dd/MM/yyyy hh:mm:ss tt
   dd/MM/yyyy h:mm:ss tt
   dd/MM/yy HH:mm:ss
   dd/MM/yy H:mm:ss
   dd/MM/yy hh:mm:ss tt
   dd/MM/yy h:mm:ss tt
   d/M/yy HH:mm:ss
   d/M/yy H:mm:ss
   d/M/yy hh:mm:ss tt
   d/M/yy h:mm:ss tt
   d.M.yy HH:mm:ss
   d.M.yy H:mm:ss
   d.M.yy hh:mm:ss tt
   d.M.yy h:mm:ss tt
   yyyy-MM-dd HH:mm:ss
   yyyy-MM-dd H:mm:ss
   yyyy-MM-dd hh:mm:ss tt
   yyyy-MM-dd h:mm:ss tt
   dd MMMM
   dd MMMM
   ddd, dd MMM yyyy HH':'mm':'ss 'GMT'
   ddd, dd MMM yyyy HH':'mm':'ss 'GMT'
   yyyy'-'MM'-'dd'T'HH':'mm':'ss
   HH:mm
   H:mm
   hh:mm tt
   h:mm tt
   HH:mm:ss
   H:mm:ss
   hh:mm:ss tt
   h:mm:ss tt
   yyyy'-'MM'-'dd HH':'mm':'ss'Z'
   dd MMMM yyyy HH:mm:ss
   dd MMMM yyyy H:mm:ss
   dd MMMM yyyy hh:mm:ss tt
   dd MMMM yyyy h:mm:ss tt
   d MMMM yyyy HH:mm:ss
   d MMMM yyyy H:mm:ss
   d MMMM yyyy hh:mm:ss tt
   d MMMM yyyy h:mm:ss tt
   MMMM yyyy
   MMMM yyyy
Using a pattern
program Project1;
{$APPTYPE CONSOLE}

uses
  System.Globalization;

var
  britCulture    : System.Globalization.CultureInfo;

  dateTimeFormat : System.Globalization.DateTimeFormatInfo;

  patterns       : Array of String;
  i              : Integer;

begin
  // Set up British culture
  britCulture := CultureInfo.Create('en-GB');

  // Get the date time format for this culture
  dateTimeFormat := britCulture.DateTimeFormat;

  // Get 'd' date time format patterns into an array
  Console.WriteLine('''d'' formats :');
  Console.WriteLine;
  patterns := dateTimeFormat.GetAllDateTimePatterns('d');

  // And display all the date time formats
  for i := 0 to Length(patterns)-1 do
    Console.WriteLine(patterns[i]);

  // Get 'd' date time format patterns into an array
  Console.WriteLine;
  Console.WriteLine('''D'' formats :');
  Console.WriteLine;
  patterns := dateTimeFormat.GetAllDateTimePatterns('D');

  // And display all the date time formats
  for i := 0 to Length(patterns)-1 do
    Console.WriteLine(patterns[i]);

  Console.ReadLine;
end.
   'd' formats :
  
   dd/MM/yyyy
   dd/MM/yy
   d/M/yy
   d.M.yy
   yyyy-MM-dd
  
   'D' formats :
  
   dd MMMM yyyy
   d MMMM yyyy
 
 
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