[C#] Note – String Format
我一向不是太喜歡背東西，寫程式也是一樣，但在求效率的現實情況下
，總是要有其它方法來協助維持一定的開發效率，這時候工具跟方法就很重要，
例如：
(1)VS2005(2008) code snippets
Jeff Widmer:http://weblogs.asp.net/jeffwids/archive/2005/09/08/424679.aspx
Adams：http://ms-net.blogspot.com/2008/03/code-snippet-editor-for-visual-basic.html
(2)善用Tool Box
喵大:http://www.dotblogs.com.tw/topcat/archive/2008/09/17/5408.aspx
另外查MSDN也是很多人常用的方法之一，只是不見得每個人查起來都那麼快速順手
所以常見於各大技術論壇會有不少人問到相關語法該怎麼寫之類的基礎問題，本篇
主要整理列出String Format的部份如下(一方面也是人老了，記憶不太好只好靠筆記囉 >_<)
|
Specifier |
Type |
Format |
Output |
Output |
|
c |
Currency |
{0:c} |
＄1.42 |
-＄12,400 |
|
d |
Decimal (Whole number) |
{0:d} |
System. |
-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. |
|
x |
Hexadecimal |
{0:x4} |
System. |
cf90 |
|
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 |
|
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 |
|
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 |
MSDN Ref:
http://msdn.microsoft.com/zh-tw/library/fht0f5be.aspx
http://msdn.microsoft.com/zh-tw/library/s8s7t687.aspx
http://msdn.microsoft.com/zh-tw/library/8kb3ddd4(VS.95).aspx
http://msdn.microsoft.com/zh-tw/library/az4se3k1(VS.95).aspx
http://msdn.microsoft.com/zh-tw/library/0c899ak8(VS.95).aspx
http://msdn.microsoft.com/zh-tw/library/dwhawy9k(VS.95).aspx
http://msdn.microsoft.com/zh-tw/library/txafckwd(VS.95).aspx
http://msdn.microsoft.com/zh-tw/library/1ksz8yb7(VS.95).aspx
By No.18