Navigation

	Home Page
	Index
	All Pages

Quick Search
Advanced Search »

Contributor Links

	Create a new Page
	Administration
	File Management
	Login/Logout
	Your Profile

Other Wiki Sections

Software

Regular Expression Samples - .Net Framework

Examples¶

• To use regular expressions, be sure to include using System.Text.RegularExpressions; in your file header.
• Regular expressions with a Passed note in the SDL column have successfully passed testing in the SDL Regex Fuzzer (available here) when run for All ASCII Characters and 500 iterations.
  

Item	Template	SDL	Regular Expression
Date	MM/DD/YYYY		^(\d{2}/\d{2}/\d{4})?$
Time	h:mmtt1		^(1[0-2]|\d)\:\d{2}\s{0,}[APap][Mm]$
Phone Number	xxx-xxx-xxxx	Passed	^[2-9]\d{2}\-\d{3}\-\d{4}$
	xxx-xxx-xxxx OR (xxx) xxx-xxxx		^([2-9]\d{2}\-|\([2-9]\d{2}\))\d{3}\-\d{4}
Email Address		Passed	^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$
Guid	hhhhhhhh-hhhh-hhhh-hhhh-hhhhhhhhhhhh		^\{{0,1}[A-Fa-f0-9]{8}\-[A-Fa-f0-9]{4}\-[A-Fa-f0-9]{4}\-[A-Fa-f0-9]{4}\-[A-Fa-f0-9]{12}\}{0,1}$
Object Method			var.([A-Za-z0-9]*)[^A-Za-z0-9]
8.3 File Name, strict2			^[A-Za-z][A-Za-z0-9_]{0,7}\.[A-Za-z0-9_]{0,3}$
8.3 File name, lenient2			^[A-Za-z][^ \"<>|:*?\\/]{0,7}\.[^ \"<>|:*?\\/]{0,3}$
URL			^(?#Protocol)(?:(?:ht|f)tp(?:s?)\:\/\/|~/|/)?(?#Username:Password)(?:\w+:\w+@)?(?#Subdomains)(?:(?:[-\w]+\.)+(?#TopLevel Domains)(?:com|org|net|gov|mil|biz|info|mobi|name|aero|jobs|museum|travel|[a-z]{2}))(?#Port)(?::[\d]{1,5})?(?#Directories)(?:(?:(?:/(?:[-\w~!$+|.,=]|%[a-f\d]{2})+)+|/)+|\?|#)?(?#Query)(?:(?:\?(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)(?:&(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)*)*(?#Anchor)(?:#(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)?$

¹ - Validates hour is between 1 and 12; can have space before meridian indicator (am/pm).
² - 8.3 file name, strict = Allowing first char alpha, the rest alphanumeric (or underscore)

Using Back References¶

Regex r = new RegEx("Cells\(([A-Za-z]*))");
MatchCollection mc = r.Matches("Cells(uxIdColumn)")
string result = mc[0].Groups[1].Value
// result now = "uxIdColumn"

Finding an Exact Match¶

//Note: MUST wrap the regular expression in parentheses (i.e., use groups)
regex.Matches(testString).Item(0).Groups(1).Value = testString ?