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ASP.NET DATE FORMAT CUSTOME

string SSS = DateTime.Now.ToString("dddd, d MMMM, yyyy", CultureInfo.CreateSpecificCulture("en-US"));

DateTime date1 = new DateTime(2008, 8, 29, 19, 27, 15);

Console.WriteLine(date1.ToString("ddd d MMM", 
                  CultureInfo.CreateSpecificCulture("en-US")));
// Displays Fri 29 Aug
Console.WriteLine(date1.ToString("ddd d MMM", 
                  CultureInfo.CreateSpecificCulture("fr-FR")));
// Displays ven. 29 août 
 
 
DateTime date1 = new DateTime(2008, 8, 29, 19, 27, 15, 18);
CultureInfo ci = CultureInfo.InvariantCulture;

Console.WriteLine(date1.ToString("hh:mm:ss.f", ci));
// Displays 07:27:15.0
Console.WriteLine(date1.ToString("hh:mm:ss.F", ci));
// Displays 07:27:15
Console.WriteLine(date1.ToString("hh:mm:ss.ff", ci));
// Displays 07:27:15.01
Console.WriteLine(date1.ToString("hh:mm:ss.FF", ci));
// Displays 07:27:15.01
Console.WriteLine(date1.ToString("hh:mm:ss.fff", ci));
// Displays 07:27:15.018
Console.WriteLine(date1.ToString("hh:mm:ss.FFF", ci));
// Displays 07:27:15.018
 
 
Format specifier
 Description
 Examples
"d"
 The day of the month, from 1 through 31.
More information: The "d" Custom Format Specifier.
 6/1/2009 1:45:30 PM -> 1
6/15/2009 1:45:30 PM -> 15
"dd"
 The day of the month, from 01 through 31.
More information: The "dd" Custom Format Specifier.
 6/1/2009 1:45:30 PM -> 01
6/15/2009 1:45:30 PM -> 15
"ddd"
 The abbreviated name of the day of the week.
More information: The "ddd" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> Mon (en-US)
6/15/2009 1:45:30 PM -> Пн (ru-RU)
6/15/2009 1:45:30 PM -> lun. (fr-FR)
"dddd"
 The full name of the day of the week.
More information: The "dddd" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> Monday (en-US)
6/15/2009 1:45:30 PM -> понедельник (ru-RU)
6/15/2009 1:45:30 PM -> lundi (fr-FR)
"f"
 The tenths of a second in a date and time value.
More information: The "f" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 6
6/15/2009 13:45:30.050 -> 0
"ff"
 The hundredths of a second in a date and time value.
More information: The "ff" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 61
6/15/2009 13:45:30.005 -> 00
"fff"
 The milliseconds in a date and time value.
More information: The "fff" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 617
6/15/2009 13:45:30.0005 -> 000
"ffff"
 The ten thousandths of a second in a date and time value.
More information: The "ffff" Custom Format Specifier.
 6/15/2009 13:45:30.6175 -> 6175
6/15/2009 13:45:30.00005 -> 0000
"fffff"
 The hundred thousandths of a second in a date and time value.
More information: The "fffff" Custom Format Specifier.
 6/15/2009 13:45:30.61754 -> 61754
6/15/2009 13:45:30.000005 -> 00000
"ffffff"
 The millionths of a second in a date and time value.
More information: The "ffffff" Custom Format Specifier.
 6/15/2009 13:45:30.617542 -> 617542
6/15/2009 13:45:30.0000005 -> 000000
"fffffff"
 The ten millionths of a second in a date and time value.
More information: The "fffffff" Custom Format Specifier.
 6/15/2009 13:45:30.6175425 -> 6175425
6/15/2009 13:45:30.0001150 -> 0001150
"F"
 If non-zero, the tenths of a second in a date and time value.
More information: The "F" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 6
6/15/2009 13:45:30.050 -> (no output)
"FF"
 If non-zero, the hundredths of a second in a date and time value.
More information: The "FF" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 61
6/15/2009 13:45:30.005 -> (no output)
"FFF"
 If non-zero, the milliseconds in a date and time value.
More information: The "FFF" Custom Format Specifier.
 6/15/2009 13:45:30.617 -> 617
6/15/2009 13:45:30.0005 -> (no output)
"FFFF"
 If non-zero, the ten thousandths of a second in a date and time value.
More information: The "FFFF" Custom Format Specifier.
 6/1/2009 13:45:30.5275 -> 5275
6/15/2009 13:45:30.00005 -> (no output)
"FFFFF"
 If non-zero, the hundred thousandths of a second in a date and time value.
More information: The "FFFFF" Custom Format Specifier.
 6/15/2009 13:45:30.61754 -> 61754
6/15/2009 13:45:30.000005 -> (no output)
"FFFFFF"
 If non-zero, the millionths of a second in a date and time value.
More information: The "FFFFFF" Custom Format Specifier.
 6/15/2009 13:45:30.617542 -> 617542
6/15/2009 13:45:30.0000005 -> (no output)
"FFFFFFF"
 If non-zero, the ten millionths of a second in a date and time value.
More information: The "FFFFFFF" Custom Format Specifier.
 6/15/2009 13:45:30.6175425 -> 6175425
6/15/2009 13:45:30.0001150 -> 000115
"g", "gg"
 The period or era.
More information: The "g" or "gg" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> A.D.
"h"
 The hour, using a 12-hour clock from 1 to 12.
More information: The "h" Custom Format Specifier.
 6/15/2009 1:45:30 AM -> 1
6/15/2009 1:45:30 PM -> 1
"hh"
 The hour, using a 12-hour clock from 01 to 12.
More information: The "hh" Custom Format Specifier.
 6/15/2009 1:45:30 AM -> 01
6/15/2009 1:45:30 PM -> 01
"H"
 The hour, using a 24-hour clock from 0 to 23.
More information: The "H" Custom Format Specifier.
 6/15/2009 1:45:30 AM -> 1
6/15/2009 1:45:30 PM -> 13
"HH"
 The hour, using a 24-hour clock from 00 to 23.
More information: The "HH" Custom Format Specifier.
 6/15/2009 1:45:30 AM -> 01
6/15/2009 1:45:30 PM -> 13
"K"
 Time zone information.
More information: The "K" Custom Format Specifier.
 With DateTime values:
6/15/2009 1:45:30 PM, Kind Unspecified ->
6/15/2009 1:45:30 PM, Kind Utc -> Z
6/15/2009 1:45:30 PM, Kind Local -> -07:00 (depends on local computer settings)
With DateTimeOffset values:
6/15/2009 1:45:30 AM -07:00 --> -07:00
6/15/2009 8:45:30 AM +00:00 --> +00:00
"m"
 The minute, from 0 through 59.
More information: The "m" Custom Format Specifier.
 6/15/2009 1:09:30 AM -> 9
6/15/2009 1:09:30 PM -> 9
"mm"
 The minute, from 00 through 59.
More information: The "mm" Custom Format Specifier.
 6/15/2009 1:09:30 AM -> 09
6/15/2009 1:09:30 PM -> 09
"M"
 The month, from 1 through 12.
More information: The "M" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> 6
"MM"
 The month, from 01 through 12.
More information: The "MM" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> 06
"MMM"
 The abbreviated name of the month.
More information: The "MMM" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> Jun (en-US)
6/15/2009 1:45:30 PM -> juin (fr-FR)
6/15/2009 1:45:30 PM -> Jun (zu-ZA)
"MMMM"
 The full name of the month.
More information: The "MMMM" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> June (en-US)
6/15/2009 1:45:30 PM -> juni (da-DK)
6/15/2009 1:45:30 PM -> uJuni (zu-ZA)
"s"
 The second, from 0 through 59.
More information: The "s" Custom Format Specifier.
 6/15/2009 1:45:09 PM -> 9
"ss"
 The second, from 00 through 59.
More information: The "ss" Custom Format Specifier.
 6/15/2009 1:45:09 PM -> 09
"t"
 The first character of the AM/PM designator.
More information: The "t" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> P (en-US)
6/15/2009 1:45:30 PM -> 午 (ja-JP)
6/15/2009 1:45:30 PM -> (fr-FR)
"tt"
 The AM/PM designator.
More information: The "tt" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> PM (en-US)
6/15/2009 1:45:30 PM -> 午後 (ja-JP)
6/15/2009 1:45:30 PM -> (fr-FR)
"y"
 The year, from 0 to 99.
More information: The "y" Custom Format Specifier.
 1/1/0001 12:00:00 AM -> 1
1/1/0900 12:00:00 AM -> 0
1/1/1900 12:00:00 AM -> 0
6/15/2009 1:45:30 PM -> 9
"yy"
 The year, from 00 to 99.
More information: The "yy" Custom Format Specifier.
 1/1/0001 12:00:00 AM -> 01
1/1/0900 12:00:00 AM -> 00
1/1/1900 12:00:00 AM -> 00
6/15/2009 1:45:30 PM -> 09
"yyy"
 The year, with a minimum of three digits.
More information: The "yyy" Custom Format Specifier.
 1/1/0001 12:00:00 AM -> 001
1/1/0900 12:00:00 AM -> 900
1/1/1900 12:00:00 AM -> 1900
6/15/2009 1:45:30 PM -> 2009
"yyyy"
 The year as a four-digit number.
More information: The "yyyy" Custom Format Specifier.
 1/1/0001 12:00:00 AM -> 0001
1/1/0900 12:00:00 AM -> 0900
1/1/1900 12:00:00 AM -> 1900
6/15/2009 1:45:30 PM -> 2009
"yyyyy"
 The year as a five-digit number.
More information: The "yyyyy" Custom Format Specifier.
 1/1/0001 12:00:00 AM -> 00001
6/15/2009 1:45:30 PM -> 02009
"z"
 Hours offset from UTC, with no leading zeros.
More information: The "z" Custom Format Specifier.
 6/15/2009 1:45:30 PM -07:00 -> -7
"zz"
 Hours offset from UTC, with a leading zero for a single-digit value.
More information: The "zz" Custom Format Specifier.
 6/15/2009 1:45:30 PM -07:00 -> -07
"zzz"
 Hours and minutes offset from UTC.
More information: The "zzz" Custom Format Specifier.
 6/15/2009 1:45:30 PM -07:00 -> -07:00
":"
 The time separator.
More information: The ":" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> : (en-US)
6/15/2009 1:45:30 PM -> . (it-IT)
6/15/2009 1:45:30 PM -> : (ja-JP)
"/"
 The date separator.
More Information: The "/" Custom Format Specifier.
 6/15/2009 1:45:30 PM -> / (en-US)
6/15/2009 1:45:30 PM -> - (ar-DZ)
6/15/2009 1:45:30 PM -> . (tr-TR)
"string"
'string'
 Literal string delimiter.
6/15/2009 1:45:30 PM ("arr:" h:m t) -> arr: 1:45 P
6/15/2009 1:45:30 PM ('arr:' h:m t) -> arr: 1:45 P
%
 Defines the following character as a custom format specifier.
More information: Using Single Custom Format Specifiers.
 6/15/2009 1:45:30 PM (%h) -> 1
\
 The escape character.
 6/15/2009 1:45:30 PM (h \h) -> 1 h
Any other character
 The character is copied to the result string unchanged.
More information: Using the Escape Character.
 6/15/2009 1:45:30 AM (arr hh:mm t) -> arr 01:45 A
 
 

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