2013년 1월 3일 목요일

C# Date and Time Format Strings

C# Date and Time Format Strings

http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx



The following table describes the custom date and time format specifiers and displays a result string produced by each format specifier. If a particular format specifier produces a localized result string, the example also notes the culture to which the result string applies. See the Notes section for additional information about using custom date and time format strings.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
6/15/2009 13:45:30.6175425 -> 6175425
6/15/2009 13:45:30.0001150 -> 000115
"g", "gg"
The period or era.
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.
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.
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.
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.
6/15/2009 1:45:30 PM -> 06
"MMM"
The abbreviated name of the month.
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.
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.
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.
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.
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.
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.
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.
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.
6/15/2009 1:45:30 PM -07:00 -> -07
"zzz"
Hours and minutes offset from UTC.
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.
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
The following sections provide additional information about each custom date and time format specifier. Unless otherwise noted, each specifier produces an identical string representation regardless of whether it is used with a DateTime value or a DateTimeOffset value.
The "d" Custom Format Specifier
The "d" custom format specifier represents the day of the month as a number from 1 through 31. A single-digit day is formatted without a leading zero.
If the "d" format specifier is used without other custom format specifiers, it is interpreted as the "d" standard date and time format specifier. For more information about using a single format specifier, see Using Single Custom Format Specifiers later in this topic.
The following example includes the "d" custom format specifier in several format strings.
C#
VB
DateTime date1 = new DateTime(2008, 8, 29, 19, 27, 15); 

Console.WriteLine(date1.ToString("d, M", 
                  CultureInfo.InvariantCulture)); 
// Displays 29, 8

Console.WriteLine(date1.ToString("d MMMM", 
                  CultureInfo.CreateSpecificCulture("en-US")));
// Displays 29 August
Console.WriteLine(date1.ToString("d MMMM", 
                  CultureInfo.CreateSpecificCulture("es-MX")));
// Displays 29 agosto
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