C#格式化数值结果表(格式化字符串)
来源:互联网 发布:买大牌的软件 编辑:程序博客网 时间:2024/04/30 01:49
字符
说明
示例
输出
C 货币 string.Format("{0:C3}", 2) $2.000 D 十进制 string.Format("{0:D3}", 2) 002 E 科学计数法 1.20E+001 1.20E+001 G 常规 string.Format("{0:G}", 2) 2 N 用分号隔开的数字 string.Format("{0:N}", 250000) 250,000.00 X 十六进制 string.Format("{0:X000}", 12) Cstring.Format("{0:000.000}", 12.2) 012.200
Strings
There really isn't any formatting within a strong, beyond it's alignment. Alignment works for any argument being printed in a String.Format call.
Sample Generates String.Format("->{1,10}<-", "Hello"); -> Hello<- String.Format("->{1,-10}<-", "Hello"); ->Hello <-
Numbers
Basic number formatting specifiers:
Specifier Type Format
Output
(Passed
Double 1.42)
Output
(Passed
Int -12400)
FormatException -12400 e Scientific {0:e} 1.420000e+000 -1.240000e+004 f Fixed point {0:f} 1.42 -12400.00 g General {0:g} 1.42 -12400 n Number with commas for thousands {0:n} 1.42 -12,400 r Round trippable {0:r} 1.42 System.
FormatException x Hexadecimal {0:x4} System.
FormatException cf90
Custom number formatting:
Specifier Type Example Output (Passed Double 1500.42) Note 0 Zero placeholder {0:00.0000} 1500.4200 Pads with zeroes. # Digit placeholder {0:(#).##} (1500).42 . Decimal point {0:0.0} 1500.4 , Thousand separator {0:0,0} 1,500 Must be between two zeroes. ,. Number scaling {0:0,.} 2 Comma adjacent to Period scales by 1000. % Percent {0:0%} 150042% Multiplies by 100, adds % sign. e Exponent placeholder {0:00e+0} 15e+2 Many exponent formats available. ; Group separator see below
The group separator is especially useful for formatting currency values which require that negative values be enclosed in parentheses. This currency formatting example at the bottom of this document makes it obvious:
Dates
Note that date formatting is especially dependant on the system's regional settings; the example strings here are from my local locale.
Specifier Type Example (Passed System.DateTime.Now) d Short date 10/12/2002 D Long date December 10, 2002 t Short time 10:11 PM T Long time 10:11:29 PM f Full date & time December 10, 2002 10:11 PM F Full date & time (long) December 10, 2002 10:11:29 PM g Default date & time 10/12/2002 10:11 PM G Default date & time (long) 10/12/2002 10:11:29 PM M Month day pattern December 10 r RFC1123 date string Tue, 10 Dec 2002 22:11:29 GMT s Sortable date string 2002-12-10T22:11:29 u Universal sortable, local time 2002-12-10 22:13:50Z U Universal sortable, GMT December 11, 2002 3:13:50 AM Y Year month pattern December, 2002
The 'U' specifier seems broken; that string certainly isn't sortable.
Custom date formatting:
Specifier Type Example Example Output dd Day {0:dd} 10 ddd Day name {0:ddd} Tue dddd Full day name {0:dddd} Tuesday f, ff, ... Second fractions {0:fff} 932 gg, ... Era {0:gg} A.D. hh 2 digit hour {0:hh} 10 HH 2 digit hour, 24hr format {0:HH} 22 mm Minute 00-59 {0:mm} 38 MM Month 01-12 {0:MM} 12 MMM Month abbreviation {0:MMM} Dec MMMM Full month name {0:MMMM} December ss Seconds 00-59 {0:ss} 46 tt AM or PM {0:tt} PM yy Year, 2 digits {0:yy} 02 yyyy Year {0:yyyy} 2002 zz Timezone offset, 2 digits {0:zz} -05 zzz Full timezone offset {0:zzz} -05:00 : Separator {0:hh:mm:ss} 10:43:20 / Separator {0:dd/MM/yyyy} 10/12/2002
Enumerations
Specifier Type g Default (Flag names if available, otherwise decimal) f Flags always d Integer always x Eight digit hex.
Some Useful Examples
String.Format("{0:$#,##0.00;($#,##0.00);Zero}", value);
This will output "$1,240.00" if passed 1243.50. It will output the same format but in parentheses if the number is negative, and will output the string "Zero" if the number is zero.
String.Format("{0:(###) ###-####}", 18005551212);
This will output "(800) 555-1212".
变量.ToString()
字符型转换 转为字符串
12345.ToString("n"); //生成 12,345.00
12345.ToString("C"); //生成 ¥12,345.00
12345.ToString("e"); //生成 1.234500e+004
12345.ToString("f4"); //生成 12345.0000
12345.ToString("x"); //生成 3039 (16进制)
12345.ToString("p"); //生成 1,234,500.00%
- C#格式化数值结果表(格式化字符串)
- C#格式化数值结果表(格式化字符串)
- C#格式化数值结果表(格式化字符串)
- C#数值结果表(格式化字符串)
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- C#格式化数值结果表
- 如何禁止安装Cab包时选择安装在存储卡
- kernel Driver Dll 内核模式 DLL编写
- 难度很大的逻辑题
- 编写XML XmlTextWriter与XmlDocument
- php中GB2312转UTF8
- C#格式化数值结果表(格式化字符串)
- 八种类型的婚姻破裂.你属于吗?
- C#利用Web Service实现短信发送(二)
- 我的面向网络编程
- 爱他就别考验他!
- COM组件技术
- 构建web组件框架
- C#利用Web Service实现短信发送(一)
- 代码生成器开发设计