C# String.Format格式说明
来源:互联网 发布:卖家加入淘宝客的条件 编辑:程序博客网 时间:2024/05/02 01:47
C#格式化数值结果表
字符
说明
示例
输出
C货币string.Format("{0:C3}", 2)$2.000D十进制string.Format("{0:D3}", 2)002E科学计数法1.20E+0011.20E+001G常规string.Format("{0:G}", 2)2N用分号隔开的数字string.Format("{0:N}", 250000)250,000.00X十六进制string.Format("{0:X000}", 12)C string.Format("{0:000.000}", 12.2)012.200Strings
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.
SampleGeneratesString.Format("->{1,10}<-", "Hello");-> Hello<-String.Format("->{1,-10}<-", "Hello");->Hello <-
Numbers
Basic number formatting specifiers:
SpecifierTypeFormat
Output
(Passed
Double 1.42)
Output
(Passed
Int -12400)
FormatException-12400eScientific{0:e}1.420000e+000-1.240000e+004fFixed point{0:f}1.42-12400.00gGeneral{0:g}1.42-12400nNumber with commas for thousands{0:n}1.42-12,400rRound trippable{0:r}1.42System.
FormatExceptionxHexadecimal{0:x4}System.
FormatExceptioncf90
Custom number formatting:
SpecifierTypeExampleOutput (Passed Double 1500.42)Note0Zero placeholder{0:00.0000}1500.4200Pads with zeroes.#Digit placeholder{0:(#).##}(1500).42 .Decimal point{0:0.0}1500.4 ,Thousand separator{0:0,0}1,500Must be between two zeroes.,.Number scaling{0:0,.}2Comma adjacent to Period scales by 1000.%Percent{0:0%}150042%Multiplies by 100, adds % sign.eExponent placeholder{0:00e+0}15e+2Many exponent formats available.;Group separatorsee 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.
SpecifierTypeExample (Passed System.DateTime.Now)dShort date10/12/2002DLong dateDecember 10, 2002tShort time10:11 PMTLong time10:11:29 PMfFull date & timeDecember 10, 2002 10:11 PMFFull date & time (long)December 10, 2002 10:11:29 PMgDefault date & time10/12/2002 10:11 PMGDefault date & time (long)10/12/2002 10:11:29 PMMMonth day patternDecember 10rRFC1123 date stringTue, 10 Dec 2002 22:11:29 GMTsSortable date string2002-12-10T22:11:29uUniversal sortable, local time2002-12-10 22:13:50ZUUniversal sortable, GMTDecember 11, 2002 3:13:50 AMYYear month patternDecember, 2002
The 'U' specifier seems broken; that string certainly isn't sortable.
Custom date formatting:
SpecifierTypeExampleExample OutputddDay{0:dd}10dddDay name{0:ddd}TueddddFull day name{0:dddd}Tuesdayf, ff, ...Second fractions{0:fff}932gg, ...Era{0:gg}A.D.hh2 digit hour{0:hh}10HH2 digit hour, 24hr format{0:HH}22mmMinute 00-59{0:mm}38MMMonth 01-12{0:MM}12MMMMonth abbreviation{0:MMM}DecMMMMFull month name{0:MMMM}DecemberssSeconds 00-59{0:ss}46ttAM or PM{0:tt}PMyyYear, 2 digits{0:yy}02yyyyYear{0:yyyy}2002zzTimezone offset, 2 digits{0:zz}-05zzzFull timezone offset{0:zzz}-05:00:Separator{0:hh:mm:ss}10:43:20/Separator{0:dd/MM/yyyy}10/12/2002
Enumerations
SpecifierTypegDefault (Flag names if available, otherwise decimal)fFlags alwaysdInteger alwaysxEight 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# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- C# String.Format格式说明
- VC 修改窗口属性 GetWindowLong SetWindowLong
- 设计模式4 - 构建者模式Builder Design Pattern
- 动态区间最大值最小值区间和查询,支持区间设置,线段树
- LIBPCAP
- 突破linux内核模块验证
- C# String.Format格式说明
- 一, 监控缓冲区的命中率
- NEFU要崛起——第1场 A - Theatre Square
- 安装VirtualBox虚拟网卡并任意修改其物理地址(MAC)
- PhotoShop与css3的结缘,自动生成css3样式的ps插件css3ps
- 每天学点shell [第一天]
- oracle 10g DATA PUMP 的REMAP_SCHEMA和REMAP_TABLESPACE的功能
- 【小蒙淘金】12月3日金评-日内震荡反弹为主
- unix文件权限详解