Custom Date and Time Format Strings_custom date and time format strings 倒计时-优快云博客

本文详细介绍了自定义日期和时间格式规范符，包括一天中的小时数、分钟数等，并提供了每个格式规范符产生的结果字符串示例。

The following table describes the custom date and time format specifiers and displays a result string produced by each format specifier. By default, result strings reflect the formatting conventions of the en-US culture. 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. 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

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

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.

Source:http://msdn.microsoft.com/en-us/library/8kb3ddd4(v=vs.110).aspx