NET2.0 invisible wings, regular expression of the soul-seekers "moon son original" __web

RegularExpressionValidator Control
Use the RegularExpressionValidator control, and of course you can validate it directly in the background without the RegularExpressionValidator control
The ValidationExpression property has several default authentication methods, but that is far from enough . The ErrorMessage property is an error message.



As shown in the picture, you can click the "..." pop-up window to select the regular expression you want, or write directly to yourself .


In IE, input is not the corresponding format will be the error :

Verify Number:

Only 1 digits can be entered
An expression	^/d$
Describe	Match a number
Examples of matches	0,1,2,3
Examples of mismatches

only n digits can be entered
An expression	^/d{n}$ For example ^/d{8}$
Describe	Match 8 digits
Examples of matches	12345678,22223334,12344321
Examples of mismatches

You can enter at least n digits
An expression	^/d{n,}$ For example ^/d{8,}$
Describe	Match at least n digits
Examples of matches	12345678,123456789,12344321
Examples of mismatches

only m to n digits can be entered
An expression	^/d{m,n}$ For example ^/d{7,8}$
Describe	Match m to n digits
Examples of matches	12345678,1234567
Examples of mismatches	123456,123456789

only numbers can be entered
An expression	^[0-9]*$
Describe	Match any number
Examples of matches	12345678,1234567
Examples of mismatches	E, Qingqing Moon, Http://blog.csdn.net/21aspnet

only one interval number can be entered
An expression	^[12-15]$
Describe	Match a number in an interval
Examples of matches	12,13,14,15
Examples of mismatches

You can only enter numbers that begin with 0 and not 0
An expression	^ (0| [1-9] [0-9]*) $
Describe	Can be 0, the first number cannot be 0, and the number can have 0
Examples of matches	12,10,101,100
Examples of mismatches	01, Qingqing Moon, Http://blog.csdn.net/21aspnet

only real numbers can be entered
An expression	^[-+]?/d+ (/./d+)? $
Describe	Matching real numbers
Examples of matches	18,+3.14,-9.90
Examples of mismatches	.6,33s,67-99

positive real numbers that can only be entered N decimal places
An expression	^[0-9]+ (. [ 0-9]{n})? $ with ^[0-9]+ (. [ 0-9]{2})? $ for example
Describe	Positive real numbers that match n decimal digits
Examples of matches	2.22
Examples of mismatches	2.222,-2.22,http://blog.csdn.net/21aspnet

only positive real numbers with m-n decimal digits can be entered
An expression	^[0-9]+ (. [ 0-9]{m,n})? $ with ^[0-9]+ (. [ 0-9]{1,2})? $ for example
Describe	Positive real numbers that match m to n decimal digits
Examples of matches	2.22,2.2
Examples of mismatches	2.222,-2.2222,http://blog.csdn.net/21aspnet

only positive integers that are not 0 can be entered
An expression	^/+? [1-9] [0-9]*$
Describe	Match a positive integer that is not 0
Examples of matches	2,23,234
Examples of mismatches	0,-4,

only negative integers that are not 0 can be entered
An expression	^/-[1-9][0-9]*$
Describe	Matches a negative integer that is not 0
Examples of matches	-2,-23,-234
Examples of mismatches	0,4,

only n characters can be entered
An expression	^. {n}$ with ^. {4}$ as an example
Describe	Match n characters, note that Chinese characters are only 1 characters
Examples of matches	1234,12we,123 Qing, qingqing Moon
Examples of mismatches	0,123,123www,http://blog.csdn.net/21aspnet/

only English characters can be entered
An expression	^. [a-za-z]+$ as an example
Describe	Match English characters, any case
Examples of matches	Asp,www,
Examples of mismatches	0,123,123www,http://blog.csdn.net/21aspnet/

only uppercase English characters can be entered
An expression	^. [a-z]+$ as an example
Describe	Match uppercase characters in English
Examples of matches	Net,www,
Examples of mismatches	0,123,123www,

only lowercase English characters can be entered
An expression	^. [a-z]+$ as an example
Describe	Match uppercase characters in English
Examples of matches	Asp,csdn
Examples of mismatches	0,net,www,

only English characters + digits can be entered
An expression	^. [a-za-z0-9]+$ as an example
Describe	Match English characters + numbers
Examples of matches	1ASP,W1W1W,
Examples of mismatches	0,123,123,www,http://blog.csdn.net/21aspnet/

only English characters/digits/underscores can be entered
An expression	^/w+$ as an example
Describe	Match English characters or numbers or underscores
Examples of matches	1asp,www,12,1_w
Examples of mismatches	3#,2-4,w#$,http://blog.csdn.net/21aspnet/

Examples of passwords
An expression	^. [a-za-z]/w{m,n}$
Describe	Matches the m-n bit character at the beginning of the English character and can only be alphanumeric or underlined
Examples of matches
Examples of mismatches

Verify first letter Capitalization
An expression	/b[^/wa-z0-9_][^/wa-z0-9_]*/b
Describe	The first letter can only be capitalized
Examples of matches	Asp,net
Examples of mismatches	http://blog.csdn.net/21aspnet/

Verify URL (with id= Chinese) vs.net2005 no this feature
An expression	^http:////([/w-]+ (/.[ /w-]+) + (//[/w-.///?%&=/u4e00-/u9fa5]*)? $
Describe	Verification band Id= Chinese
Examples of matches	http://blog.csdn.net/21aspnet/, http://blog.csdn.net?id= qingqing Month son
Examples of mismatches

Verifying Chinese characters
An expression	^[/u4e00-/u9fa5]{0,}$
Describe	Only Chinese characters
Examples of matches	Qingqing Moon
Examples of mismatches	http://blog.csdn.net/21aspnet/

Verify QQ number
An expression	[0-9] {5,9}
Describe	5-9-digit QQ number
Examples of matches	10000,123456
Examples of mismatches	10000w,http://blog.csdn.net/21aspnet/

Verify e-mail (verify MSN number)
An expression	/w+ ([-+. '] /w+) *@/w+ ([-.] /w+) */./w+ ([-.] /w+) *
Describe	Note that MSN with a non-Hotmail.com mailbox can also
Examples of matches	Aaa@msn.com
Examples of mismatches	111@1. http://blog.csdn.net/21aspnet/

Verify the identity card number (rough check, the best server-side tuning class library again fine verification)
An expression	^[1-9] ([0-9]{16}|[ 0-9]{13}) [xx0-9]$