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Title	Test Details A string of any US ASCII letters
Expression	^[a-zA-Z]+$
Description	Matches any string of only upper- and lower- case letters (no spaces).
Matches	abc | ABC | aBcDeF
Non-Matches	abc123 | mr. | a word
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Alphanumeric
Expression	^[a-zA-Z0-9]+$
Description	Matches any alphanumeric string (no spaces).
Matches	10a | ABC | A3fg
Non-Matches	45.3 | this or that | $23
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	foo
Description	The "hello world" of regular expressions, this will match any string with an instance of 'foo' in it.
Matches	foo
Non-Matches	bar
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^[0-9]+$
Description	Validate a string to see if it contains a number / integer
Matches	1234567890 | 1234567890 | 1234567890
Non-Matches	http://none | http://none | http://none
Author	Rating: Mr M

Title	Test Details Pattern Title
Expression	^.{4,8}$
Description	Matches any string between 4 and 8 characters in length. Limits the length of a string. Useful to add to password regular expressions.
Matches	asdf | 1234 | asdf1234
Non-Matches	asd | 123 | asdfe12345
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^\d*$
Description	Accepts an unsigned integer number. Also matches empty strings.
Matches	123 | 000 | 43
Non-Matches	asbc | -34 | 3.1415
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[-+]?\d*$
Description	Matches any integer number or numeric string, including positive and negative value characters (+ or -). Also matches empty strings.
Matches	123 | -123 | +123
Non-Matches	abc | 3.14159 | -3.14159
Author	Rating: Steven Smith

Title	Test Details Pattern Title
Expression	^\d*\.?\d*$
Description	Matches any unsigned floating point number/numeric string. Also matches empty strings.
Matches	123 | 3.14159 | .234
Non-Matches	abc | -3.14159 | 3.4.2
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^[-+]?\d*\.?\d*$
Description	Matches any floating point numer/numeric string, including optional sign character (+ or -). Also matches empty strings.
Matches	123 | +3.14159 | -3.14159
Non-Matches	abc | 3.4.5 | $99.95
Author	Rating: Not yet rated. Steven Smith

Title	Test Details Pattern Title
Expression	^([0-1][0-9]|[2][0-3]):([0-5][0-9])$
Description	Matches a string if it is a valid time in the format of HH:MM
Matches	02:04 | 16:56 | 23:59
Non-Matches	02:00 PM | PM2:00 | 24:00
Author	Rating: Not yet rated. Koen Hoorelbeke

Title	Test Details Pattern Title
Expression	^[a-zA-Z0-9\s.\-]+$
Description	ANY alphanumeric string with spaces, commas, dashes.
Matches	2222 Mock St. | 1 A St. | 555-1212
Non-Matches	[A Street] | (3 A St.) | {34 C Ave.}
Author	Rating: Not yet rated. Mart Maasikas

Title	Test Details Pattern Title
Expression	\[link="(?<link>((.|\n)*?))"\](?<text>((.|\n)*?))\[\/link\]
Description	This can be used in conjunction with the replace method to provide pseudo-code support without having to enable HTML. The replacement string (in ASP.NET, use RegExp.Replace(SourceString, RegularExpressionPattern, ReplacementString) is &lt;a href=&quot;${link}&quot;&gt;${text}&lt;/a&gt;.
Matches	[link="http://www.yahoo.com"]Yahoo[/link]
Non-Matches	[link]http://www.yahoo.com[/link] | [link=http://www.yahoo.com]Yahoo[/link]
Author	Rating: Not yet rated. Ryan S

Title	Test Details Pattern Title
Expression	<[^>]*name[\s]*=[\s]*"?[^\w_]*"?[^>]*>
Description	This RX is used to find get all named tags in an html string. If you find a problem with it, please email [email protected]
Matches	<input type = text name = "bob"> | <select name = "fred"> | <form
Non-Matches	<input type = submit> | <font face = "arial"> | The drity brown fox stank like
Author	Rating: Not yet rated. Andrew Freese

Title	Test Details Pattern Title
Expression	"((\\")|[^"(\\")])+"
Description	Matches quoted string, using \" as an escape to place quotes in the string
Matches	"test" | "escape\"quote" | "\""
Non-Matches	test | "test | "test\"
Author	Rating: Alessandro Vergani

Title	Test Details Pattern Title
Expression	(^([0-9]|[0-1][0-9]|[2][0-3]):([0-5][0-9])$)|(^([0-9]|[1][0-9]|[2][0-3])$)
Description	Matches a string if it is a valid time in the format of HH:MM / H:MM / HH / H
Matches	10:35 | 9:20 | 23
Non-Matches	24:00 | 20 PM | 20:15 PM
Author	Rating: Nacho Varas

Title	Test Details Pattern Title
Expression	("[^"]*")|('[^\r]*)(\r\n)?
Description	Will match a VBScript string and/or comment Ex: ' userinfo strUsername = "tomsve" iAge = 20 ' temp strPassword = "halloj" ...Would result in the following matches: ' userinfo "tomsve" ' temp "halloj" Good luck! Tom S. [email protected]
Matches	"my string" | "a string with ' in it" | ' comment
Non-Matches	asd "
Author	Rating: Tom Svensson

Title	Test Details Pattern Title
Expression	^[A-Za-z0-9]{8}-[A-Za-z0-9]{4}-[A-Za-z0-9]{4}-[A-Za-z0-9]{4}-[A-Za-z0-9]{12}$
Description	GUID Tester. This is a modification from the regular expression submitted by James Bray ([email protected]). It allows the use of mixed upper and lowercase letters in the GUID string.
Matches	BFDB4D31-3E35-4DAB-AFCA-5E6E5C8F61EA | BFDB4d31-3e35-4dab-afca-5e6e5c8f61ea
Non-Matches	qqqBFDB4D31-3E35-4DAB-AFCA-5E6E5C8F61EA | BFDB4D31-3E-4DAB-AFCA-5E6E5C8F61EA | BFDB4D31-3E35-4DAB-AF
Author	Rating: Not yet rated. V. Lorz

Title	Test Details Text Extension
Expression	^(([a-zA-Z]:)|(\\{2}\w+)\$?)(\\(\w[\w ]*))+\.(txt|TXT)$
Description	This RE validates a path/file of type txt (text file) This RE can be used as a filter on certain file types, while insuring the entire string is a fully qualified path and file. The filter value can be changed or added to as you need
Matches	c:\file.txt | c:\folder\sub folder\file.txt | \\network\folder\file.txt
Non-Matches	C: | C:\file.xls | folder.txt
Author	Rating: Not yet rated. Michael Ash

Title	Test Details Pattern Title
Expression	^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&%\$#\=~])*$
Description	Modified URL RegExp that requires (http, https, ftp)://, A nice domain, and a decent file/folder string. Allows : after domain name, and these characters in the file/folder sring (letter, numbers, - . _ ? , ' / \ + & % $ # = ~). Blocks all other special characters-good for protecting against user input!
Matches	http://www.blah.com/~joe | ftp://ftp.blah.co.uk:2828/blah%20blah.gif | https://blah.gov/blah-blah.as
Non-Matches	www.blah.com | http://www.blah"blah.com/I have spaces! | ftp://blah_underscore/[nope]
Author	Rating: Brandon Luhring

Title	Test Details Pattern Title
Expression	^([0-9a-fA-F][0-9a-fA-F]:){5}([0-9a-fA-F][0-9a-fA-F])$
Description	This will grep for a valid MAC address , with colons seperating octets. It will ignore strings too short or long, or with invalid characters. It will accept mixed case hexadecimal. Use extended grep.
Matches	01:23:45:67:89:ab | 01:23:45:67:89:AB | fE:dC:bA:98:76:54
Non-Matches	01:23:45:67:89:ab:cd | 01:23:45:67:89:Az | 01:23:45:56:
Author	Rating: Not yet rated. Ted Rudyk