. NET2.0 invisible wings, regular expression of the soul-seekers

Source: Internet
Author: User
Tags lowercase



This article implements the following:
Only 1 digits can be entered
Only n digits can be entered
You can enter at least n digits
only m to n digits can be entered
Only numbers can be entered
Only one interval number can be entered
You can only enter numbers that begin with 0 and not 0
Only real numbers can be entered
Positive real numbers that can only be entered N decimal places
Only positive real numbers with m-n decimal digits can be entered
Only positive integers that are not 0 can be entered
Only negative integers that are not 0 can be entered
Only n characters can be entered
Only English characters can be entered
Only uppercase English characters can be entered
Only lowercase English characters can be entered
Only English characters + digits can be entered
Only English characters/digits/underscores can be entered
Examples of passwords
Verify first letter Capitalization
Verify URL (with id= Chinese) vs.net2005 no this feature
Verifying Chinese characters
Verify QQ number
Verify e-mail (verify MSN number)
Verify the identity card number (rough check, the best server-side tuning class library again fine verification)
Verify mobile phone number (including 159, does not contain PHS)
Verify phone number (very complex, vs.net2005 is wrong)
Verify Passport
Verify IP, verify domain authentication credit card (support Visa Card, MasterCard, Discover, American Express card)
Verify ISBN International Standard ISBN

Verify GUID Global Unique identifier
Verifying file paths and extensions
Validating HTML color values

... ...
I know
I've always had a pair of invisible wings.
Take me to fly
Give me hope.
I finally
See
All the dreams are blooming
Chasing the young
... ...
--------------- singer: Angela -han album: Pandora

The regular expression is. NET invisible syntax. There are a lot of articles about its syntax, and you can also refer to MSDN. The purpose of this article is to provide examples, including all regular expression usage, will continue to supplement, welcome to leave a message to support.

The following links have a sufficient number of basic tutorials:
Http://blog.csdn.net/21aspnet/category/285967.aspx

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]$
Describe
Examples of matches 15 or 18-digit ID number, support with X
Examples of mismatches http://blog.csdn.net/21aspnet/

Verify mobile phone number (including 159, does not contain PHS)
An expression ^13[0-9]{1}[0-9]{8}|^15[9]{1}[0-9]{8}
Describe Contains 159 of mobile phone number 130-139
Examples of matches 139XXXXXXXX
Examples of mismatches 140xxxxxxxx,http://blog.csdn.net/21aspnet/

Verify phone number (very complex, vs.net2005 is wrong)
Expression (Imperfect) Option One ((/(/d{3}/) |/d{3}-) | ( /(/d{4}/) |/d{4}-))? (/d{8}|/d{7})
Programme II (^[0-9]{3,4}/-[0-9]{3,8}$) | (^[0-9]{3,8}$) | (^/([0-9]{3,4}/) [0-9]{3,8}$) | (^0{0,1}13[0-9]{9}$) Support cell phone number but also not perfect
Describe

Shanghai: 02112345678 3+8 bit
Shanghai: 021-12345678
Shanghai: (021)-12345678
Shanghai: (021) 12345678
Zhengzhou: 03711234567 4+7 bit
Hangzhou: 057112345678 4+8 bit
And with the extension number, the country code.
Because the situation is very complex so do not recommend the front desk to do 100% verification, so far there seems to be no one can write a containing all types , in fact, there are many situations in itself is contradictory.
If anyone has a better authentication call, leave a message.

Examples of matches
Examples of mismatches

Verify Passport
An expression

(P/d{7}) | G/D{8})

Describe Verify p+7 numbers and g+8 numbers
Examples of matches
Examples of mismatches Qingqing Moon, http://blog.csdn.net/21aspnet/

Verifying IP
An expression

^ (25[0-5]|2[0-4][0-9]| [0-1] {1} [0-9] {2}| [1-9] {1} [0-9] {1}| [1-9]) /. (25[0-5]|2[0-4][0-9]| [0-1] {1} [0-9] {2}| [1-9] {1} [0-9] {1}| [1-9]|0]/. (25[0-5]|2[0-4][0-9]| [0-1] {1} [0-9] {2}| [1-9] {1} [0-9] {1}| [1-9]|0]/. (25[0-5]|2[0-4][0-9]| [0-1] {1} [0-9] {2}| [1-9] {1} [0-9] {1}| [0-9]) $

Describe Verifying IP
Examples of matches 192.168.0.1 222.234.1.4
Examples of mismatches

Verify Domain
An expression

^[a-za-z0-9]+ ([a-za-z0-9/-/.] +)?/. (com|org|net|cn|com.cn|edu.cn|grv.cn|) $

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