String.Format格式说明(转)
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) | $2.000 |
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) | C |
string.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 |
Output |
c | Currency | {0:c} | $1.42 | -$12,400 |
d | Decimal (Whole number) | {0:d} | System. 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%
String.Format格式说明(转)的更多相关文章
- String.Format格式说明——复制于DotNet笔记
String.Format格式说明 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) $2.000 D 十进制 st ...
- JSON详解+ C# String.Format格式说明+ C# ListView用法详解 很完整
JSON详解 C# String.Format格式说明 C# ListView用法详解 很完整
- string类(三、string.format格式字符串)
参考连接: http://www.cnblogs.com/luluping/archive/2009/04/30/1446665.html http://blog.csdn.net/samsone/a ...
- String.Format 格式说明
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) $2.000 D 十进制 string.Format("{0 ...
- C# String.Format格式说明
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) $2.000 D 十进制 string.Format("{0 ...
- String.Format格式说明
原文地址:http://www.cnblogs.com/tuyile006/archive/2006/07/13/449884.aspx C#格式化数值结果表 字符 说明 示例 输出 C 货币 str ...
- C# string.Format()格式
using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace Cons ...
- 【2017-04-19】C#中String.Format格式使用
例子: int a =9; string s= a.ToString("000"); Console.Write(s); 打印出来就是009 C#格式化数值结果表 字符 说明 示例 ...
- JAVA字符串格式化-String.format()的使用(转)
常规类型的格式化 String类的format()方法用于创建格式化的字符串以及连接多个字符串对象.熟悉C语言的同学应该记得C语言的sprintf()方法,两者有类似之处.format()方法有两种重 ...
随机推荐
- WEBUS2.0 In Action - 索引操作指南(2)
上一篇:WEBUS2.0 In Action - 索引操作指南(1) | 下一篇:WEBUS2.0 In Action - 搜索操作指南(1) 3. 添加.删除.撤销删除和修改文档 在WEBUS中要将 ...
- POJ 2125 Destroying The Graph (二分图最小点权覆盖集+输出最小割方案)
题意 有一个图, 两种操作,一种是删除某点的所有出边,一种是删除某点的所有入边,各个点的不同操作分别有一个花费,现在我们想把这个图的边都删除掉,需要的最小花费是多少. 思路 很明显的二分图最小点权覆盖 ...
- 韦东山驱动视频笔记——3.字符设备驱动程序之poll机制
linux内核版本:linux-2.6.30.4 目的:我们在中断方式的按键应用程序中,如果没有按键按下,read就会永远在那等待,所以如果在这个程序里还想做其他事就不可能了.因此我们这次改进它,让它 ...
- (转)Python 字典排序
我们知道Python的内置dictionary数据类型是无序的,通过key来获取对应的value.可是有时我们需要对dictionary中 的item进行排序输出,可能根据key,也可能根据value ...
- 【Python】Python重新学习
<python基础教程(第二版)> http://www.cnblogs.com/fnng/category/454439.html 分片(后面取的是前一位) eg: >>&g ...
- IOS设计模式之四(备忘录模式,命令模式)
本文原文请见:http://www.raywenderlich.com/46988/ios-design-patterns. 由 @krq_tiger(http://weibo.com/xmuzyq) ...
- NetBeans-xdebug的安装
如果总是提示正在连接,ok,应该是没有装xdebug; 1,下载Php版本对应的xdebug.dll文件,以下是官方提供的网址,可以智能判断环境,给出下载链接和使用指南 http://www.xdeb ...
- Selenium启动本地firefox的profile
ProfilesIni pi = new ProfilesIni();FirefoxProfile profile = pi.getProfile("default");WebDr ...
- coroutine in c 备忘
coroutine: stackless和stackful jmp 基于switch的trick: http://www.chiark.greenend.org.uk/~sgtatham/corout ...
- 凸包稳定性判断:每条边上是否至少有三点 POJ 1228
//凸包稳定性判断:每条边上是否至少有三点 // POJ 1228 #include <iostream> #include <cstdio> #include <cst ...