Regular Expressions

regular-expression

Great Reads

Ultra-Rapid PHP Application Development

by Christoph Buenger

Describes PHP application development with the free Scavix Web Development Framework (Scavix-WDF).

How to Build a Regex Engine in C#

by honey the codewitch

Build a feature rich, non-backtracking regular expression engine and code generator in C#

Reggie: A Non-Backtracking Streaming Regular Expression Code Generator

by honey the codewitch

Embed fast streaming C# code to match text based on inputted regular expressions

Regex to remove someone's overzealous use of regions.

by Daniel Vaughan

A Visual Studio regex to remove someone's overzealous use of regions in VS. Find and replace: (^.*\#region.*$)|(^.*\#endregion.*$) Remember to enable regular expressions in the Visual Studio find and replace dialog.

Latest Articles

Data Validation with Visual FA

by honey the codewitch

How to validate fields for things like data entry applications.

Visual FA Part 4: Generating Matchers and Lexers with the Visual FA C# Source Generator

by honey the codewitch

Easily add lexers to your project with this simple drop in NuGet package and a few annotations

Visual FA Part 3: The Code Behind It All

by honey the codewitch

In this article, we explore the inner workings of Visual FA

Visual FA Part 2: Using Visual FA to Analyze Automata and to Process Text

by honey the codewitch

Continuing in the Visual FA series, now we explore API fundamentals

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Regular Expressions

Ultra-Rapid PHP Application Development

31 Oct 2014 by Christoph Buenger

Describes PHP application development with the free Scavix Web Development Framework (Scavix-WDF).

SQL

HTML

Javascript

MySQL

How to Build a Regex Engine in C#

21 Nov 2019 by honey the codewitch

Build a feature rich, non-backtracking regular expression engine and code generator in C#

.NET

Dev

regular-expression

Reggie: A Non-Backtracking Streaming Regular Expression Code Generator

10 Nov 2021 by honey the codewitch

Embed fast streaming C# code to match text based on inputted regular expressions

Regex to remove someone's overzealous use of regions.

23 Nov 2009 by Daniel Vaughan

Visual-Studio

regular-expression

Advanced Regex.Replace handling

7 May 2010 by Chris Trelawny-Ross

I agree it would be nice to be able to use the group name in the switch; unfortunately the Group object doesn't have a Name property (and neither does its base class Capture) so the best you'll be able to do is the following:string ReplaceMatch(Match m) { if...

regular-expression

A Regular Expression Engine in C#

31 Mar 2019 by honey the codewitch

A Non-Backtracking Regular Expression Engine for .NET (Core)

FSM Explorer: Learn Regex Engines and Finite Automata

2 Jan 2024 by honey the codewitch

This article presents a program to help visualize regular expression mechanics.

regular-expression

Fun With State Machines: Incrementally Parsing Numbers Using Hacked Regex

2 Jan 2021 by honey the codewitch

Hoodwink your computer into doing your work for you using regular expressions

rxcg: A Simple Text Matcher C Code Generator for IoT

15 Nov 2023 by honey the codewitch

Generate tight C code to match text based on regular expressions

IoT

regular-expression

WiFi Password Recovery and Management Tool

27 Sep 2019 by Mohamed Kalmoua

In this article, I will discuss a WiFi password recovery and management tool that I created in WPF using Visual Studio 2019.

Help with a Regular Expression

15 Jun 2012 by VJ Reddy

I think the matching with prefix and suffix options of Regex can be used to extract only the required value from the parentheses as shown below:string text = @"STRING[261] Directory(\FTP\OSP_003\)\nSTRING[9] FileName(SysParaI)\nSTRING[4] FileExtension(002)";Match match = Regex.Match(text,...

regular-expression

Visual FA Part 1: Understanding Finite Automata

15 Jan 2024 by honey the codewitch

In this article, we will use my Visual FA solution to explore finite automata concepts used for finding patterns in text.

regular-expression

Don't count spaces when counting words.

18 Oct 2011 by George Swan

The Regex method uses comma, full stop, hyphen, and apostrophe as word separators. The problem with this is that these characters are not universally used as separators. The hyphen is used to join two words. Could I suggest the following?string input = "Mr O'Brien-Smith arrived at 8.30 and...

regular-expression

ASP.NET Password Strength Regular Expression

5 Jan 2011 by Bryian Tan

ASP.NET Password Strength Regular Expression. Customize n numbers of upper case, digits, special characters.

regular-expression

Regular Expression to match a definite pattern on each occurence.

12 Jun 2012 by OriginalGriff

Try:/[sz2]Th...

regular-expression

Lex: An Optimizing Compiler for Regular Expressions

3 Feb 2020 by honey the codewitch

A Pike virtual machine and optimizing compiler for regular expressions using an NFA engine

How to Remove opening tags if ending tags are not there ?

20 Jan 2011 by Rob Philpott

OK - this is a bit of algorithmic fun and I'll tell you how I'd go about it, but you'll have to figure the code out yourself.You need to combine a forward reading parser with a recursive object or functional call. On every open tag you need to go one level further of recursion, storing the...

regular-expression

How can I split string with expected parenthesis ?

23 Apr 2015 by CHill60

Essentially you are attempting to parse the grammar in the string.See this CP article Parsing Expression Grammar Support for C# 3.0 Part 1 - PEG Lib and Parser Generator[^] which is also referenced from this post[^] that includes some alternative ideas.Here's an academic paper[^] on the...

.NET

regular-expression

Regex link matching on raw text

2 May 2016 by George Jonsson

You can try thishttp:(?:(?!http:).)*It will match from http: up to the next occurence, but not including it.The result of your sample string will be 3 separate matches.[UPDATE]Forgot the https variant:http(?:s)?:(?:(?!http(?:s)?:).)*

regular-expression

How to Make an LL(1) Parser: Lesson 2

14 Jul 2019 by honey the codewitch

Creating a simple parser in 3 easy lessons

FA: A Unicode Automata and Regular Expression Engine

1 Feb 2020 by honey the codewitch

Add non-backtracking fast DFA regular expression and finite state automata to your projects

FastFA: A Unicode Enabled Regex Engine for Code Generators

25 Dec 2021 by honey the codewitch

Explore, run, and manipulate DFA regular expressions from graphs, to state machines with this library

.NET

text

regular-expression

Remove all the HTML tags and display a plain text only inside (in case XML is not well formed)

19 Dec 2010 by PIEBALDconsult

How about loading it into an XmlDocument and getting the InnerText? (Provided the HTML is well-formed XML, of course.)

Remove all the HTML tags and display a plain text only inside (in case XML is not well formed)

20 Dec 2010 by JHoye

Consider using the open source HTML Agility Pack library (htmlagilitypack.codeplex.com).It lets you use XPATH queries to access very specific parts of an HMTL document, and the HTML does not have to be valid, well-formed XML. In addition to accessing the raw inner text of an element you can...

How do I form this regex?

23 Dec 2010 by OriginalGriff

Try([a-zA-z]...

regular-expression

Stuck with string replacement

14 Apr 2012 by VJ Reddy

One option is to split the original string at the location of ? and reconstruct using @param as shown belowSub Main Dim statement As String = "INSERT INTO X (a,b,c) values (?,?,?)" Dim statements As String() = statement.Split("?"C) 'Construct a stringbuilder Dim sb As New...

string

regular-expression

Help with a Regular Expression

15 Jun 2012 by Clifford Nelson

You can go simple and justRegex r = new Regex(@"$.*$");var e = r.Matches(s);e is a collection of matches, and will include the "()"Will not requerRegex r = new Regex(@"$(.*)$");var e = r.Match(s);e.Groups will contain all matches, the second item will your result

regular-expression

Help needed in Regular Expression

6 Sep 2012 by Volynsky Alex

Regular expression, or often known as regex, is a pattern that consist of rules used to match a certain set of strings. They are extremely powerful, and you’ll need them in most programming languages you come across, especially when there’s a need to scan and match context for further...

regular-expression

Parsing a Key-Value pair with a Regular Expression

6 Sep 2014 by Marco Bertschi

A walk-through on how a Key-Value pair can be parsed using a PERL-compatible regex engine

Dev

regular-expression

I need a Regular expression for alphabet and space

19 Apr 2014 by Peter Leow

Try this:^[a-zA-Z]+(\s[a-zA-Z]+)?$

regular-expression

Find exact match in c#

5 Jan 2015 by DamithSL

sample code:var splitwords =new string[] {"egg","eggs", "have a receipt"}; string input ="I have a receipt with eggs but others with just one egg";foreach (string word in splitwords){ var regex = new Regex(@"(?

WinForms

regular-expression

Count of string returns 350 when entering special "a"

15 Mar 2016 by Jochen Arndt

It is returning a length of 350 because the string contains 350 characters.To verify this, select the text and paste it into an Unicode editor (e.g. with Notepad++ choose File - New, Encoding - UCS-2 Little Endian, and paste the text). Within Notepad++, it will look like (shortened, there...

security

string

regular-expression

StringBox Control with Keystroke Validation

22 Jul 2020 by siliconvideo

This StringBox control implements keystroke validation using regular expressions and a touch of glue logic

C# regex question.

14 Nov 2010 by OriginalGriff

You either have an extra backslash: "[(.*?;)([(if)(while)(for)]\s*?$.*?${({.*?})*?})]"becomes"[(.*?;)([(if)(while)(for)]\s*?(.*?\){({.*?})*?})]"or one too few:"[(.*?;)([(if)(while)(for)]\s*?$.*?${({.*?}\)*?})]"

regular-expression

String/Substring find and replace

11 Jan 2011 by #realJSOP

It's certainly the fastest way to type it.If you want to try to find faster ways, be a programmer and try different ways to approach the problem.Performance for such a task would greatly depend on the length of the string involved.

string

regular-expression

Method for textbox validation

30 Mar 2011 by OriginalGriff

Unfortunately, AFAIK there is no way top make a regex which replaces "one of these" with "one of those".You can clean it up a bit, by using a MatchEvaluator to remove the need for a String builder. Make the regex just a list of known invalid characters and: result =...

regular-expression

comma separated values

26 May 2011 by Kim Togo

Try this Regex: ,(?!(?

regular-expression

What is the meaning of this code

20 Nov 2011 by Michel [mjbohn]

This is a so called 'regular expression' (RegEx).Just have a look at this :http://en.wikipedia.org/wiki/Regular_expression[^]Your RegEx will match when:0 or more whitespaces (\s*)are followed byexactly two digits (\d{2})followed by ':'followed by 0 or more whitespaces...

regular-expression

Regular expression to extract pattern from a string

22 Feb 2012 by Peter_in_2780

The first thing to do is to write down exactly what you want to match. From your examples, it looks to me like this is a good start:a non-letterfaceoptional apostropheoptional sa non-letterTranslated into a regex, this turns into[^a-zA-Z]face\'?s?[^a-zA-Z]You then need to...

Java

regular-expression

Stuck with string replacement

11 Apr 2012 by Mehdi Gholam

Use :(?\(\s*\?.*)+Which will give you the (...) portion and then just count the number of ? chars and replace with @paramN where N is an iterator.

string

regular-expression

CollectionRegex -- Regular Expressions for Collections

16 Apr 2012 by Lutosław

Find patterns in a sequence of objects using a familiar language.

REG Expression quesiton

20 Jun 2012 by Tim Corey

Note: These suggestions aren't Regex specifically, which I know you asked for. I'll work on a RegEx for you as well, but these solutions seem simpler and lighter than full RegEx:Pass the file names into the GetExtension method like so:string extension =...

regular-expression

Regex for not containing some words

21 Jun 2012 by AspDotNetDev

You want a negative lookahead or a negative lookbehind. Suppose you want to validate so that a phrase starts with "string" and ends with "bee", but does not contain "like". You could use this regular expression (which uses a negative lookahead):(?!.*like)^sting.*bee$The negative look ahead...

string

text

regular-expression

C# string matching with wildcards

12 Sep 2012 by Clifford Nelson

Look at the following tip (do not consider it an article, although so classified): Converting Wildcards to Regexes[^]

C#3.0

WinForms

regular-expression

Find and replace a string using regular expressions

27 Sep 2012 by Yvan Rodrigues

Replace ntext$\d+$ with TEXTReplace DEFAULT$\((\d+)$\) with DEFAULT '$1'

regular-expression

Need regEx for this.

25 Feb 2013 by Joezer BH

Hello Choudhary, \w in regex means: any word character (letter, number, underscore)you may use . (dot) that means: any single characterGood luck, Edo

regular-expression

Regular expression for splitting a comma-delimited string

10 May 2013 by André Kraak

I found a similar question on Stack Overflow[^] and used its answer on your problem.The idea is to split only on comma's that have an even number of or no single quotes after it.Using this expression I got the result without the additional blank line you are looking for....

regular-expression

.Net Regex: Match but don't include part of the match

30 Oct 2013 by strogg

Try this instead of enclosing your exp with [^\d]...regex...[^\d](?

regular-expression

Regular Expression (first character must be a-z)?

16 Jun 2014 by Peter Leow

^[a-zA-Z][a-zA-Z\s\-]*$

ASP.NET

regular-expression

InfoIP a tool to find your WAN IP

8 Sep 2014 by cogi83

A SW to send your WAN IP and other info via email

Parsing sentence using template

1 Nov 2014 by George Jonsson

Basically you can replace the keyword @city with \s+(?[\S\s]+?)\s+Example:string template1 = @"^Tell me the forcast of\s+(?[\S\s]+?)\s+for\s+(?[\S\s]+)$";In C# you useMatch m = Regex.Match("Tell me the forcast of Las Vegas for tomorrow", template1);if...

regular-expression

Converting a specific regular expression pattern from java to c#

10 Nov 2014 by PIEBALDconsult

I have been unable to determine what the meaning of \Q is in Java, but in Perl, it's:\Q quote (disable) pattern metacharacters until \E\E end either case modification or quoted section,This doesn't appear in the .net implementation and seems needless in your...

C#5.0

Java

regular-expression

Finding a string should have a particular letters?

12 Dec 2014 by Unihedron

See this regex:/^(?=[^a]*a)(?=[^n]*n)(?=[^u]*u)/iRegex explanation:^ Asserts position at start of string.(?=[^a]*a) Asserts that "a" is present after all the non-"a"s.(?=[^n]*n) Asserts that "n" is present after all the non-"n"s.(?=[^u]*u Asserts that "u" is present after all...

regular-expression

Finding a string should have a particular letters?

12 Dec 2014 by Maciej Los

The same you can achieve using Linq[^] query:string[] words = new string[]{"Anitha", "Nandu","anushka","jayasree"};var qry = from w in words where w.ToLower().Contains('a') && w.ToLower().Contains('n') && w.ToLower().Contains('u') select w;foreach(string word in...

regular-expression

What is the pattern match for a string which can allow Alpha numeric, underscore and dot

21 Jan 2015 by Peter Leow

Try this:^[\d\._\w]+$also read: The 30 Minute Regex Tutorial[^]

regular-expression

How to Compare strings by Regex inside a LINQ Query?

12 Feb 2015 by Richard Deeming

Two problems with your code:You've used Regex.Match instead of Regex.IsMatch;You've missed the @ prefix on the second "\b" string;I'd also be inclined to add a Regex.Escape around the word to find, in case it contains any special characters.var listTobeDeleted =...

LINQ

regular-expression

Regular expression for 9 digits and one character

10 Nov 2015 by OriginalGriff

Try:$\d{9}[A-Za-z]^

regular-expression

Regular Expression Worst Situation

7 Dec 2015 by Peter Leow

Try this:(?)\d\.\d\.\d.\d(?=\)The keys lie in:(?

regular-expression

How Can I Get The Matched String In Pattern In Vb.Net

22 Dec 2015 by Richard Deeming

Your parameters are the wrong way round - the first parameter is the string to test, and the second parameter is the regular expression to use:Regex.IsMatch(myString, ".* My name is XYZ")To retrieve the details of the match, use the Match method[^], which returns a Match object[^]....

.NET

patterns

regular-expression

Vb.net regex function values between commas (",")

4 Mar 2016 by Richard Deeming

Your pattern currently consumes the leading and trailing commas, so every other value is skipped.You need to use zero-width positive lookahead/lookbehind assertions instead:Regular Expression Language - Quick Reference[^]Also, it would be better to use [^\,]* rather than .*?, since you...

regular-expression

Regex link matching on raw text

2 May 2016 by Patrice T

See solution 1 for a working solution.This site can help to see if a regex is doing what you expect.Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]I guess you will have to read regex documentation to understand advanced usages.perlre - perldoc.perl.org[^]By...

regular-expression

Regex - split quoted string as one words

1 Jun 2016 by OriginalGriff

String.Split isn't a Regex - it's just a basic string method that can't do anything too complex.Try:("[^"]*")|([^\s]+)as a regex - it should give you what you want as separate Group values.

C#3.5

string

regular-expression

What matches this regex expression?

27 Sep 2016 by OriginalGriff

It's not a valid regex for a telephone number: what it matches is literally a single numeric digit followed by the text "{5-15}" and nothing else.What they probably meant to say was:^[0-9]{5,15}$Which matches "any string of numeric digits between 5 and 15 characters long,...

regular-expression

Chronological Expressions (ChronEx) for Event Logs

11 Jun 2018 by Member 10481957

Chronological Expressions is a RegEx inspired Pattern Matching Library and Specification for query event logs

.NET

logging

regular-expression

Credit card match with number + expire and CVV

25 Sep 2019 by MadMyche

Using RegEx for Credit Cards is at best rudimentary; you are better off validating what you are actually working with Credit Card numbers themselves are generally at least 16 digits long; the primary exception being American Express which uses 15 digits. CVV numbers are 3 digits long for most;...

regular-expression

Help needed with regex for a string

22 Sep 2020 by Maciej Los

[EDIT] If you would like optionally to get first occurance of 99,00... For lines: My super data plan 10gb mobile 99,00 1 jul - 31 jul 2020 99,00 My super data plan 10gb mobile 1 jul - 31 jul 2020 99,00 Try this: ...

regular-expression

Dismantling Reggie

8 Nov 2021 by honey the codewitch

Deep dive some advanced source generation in a real world application

Cleanup the lines which consist of only symbols + - spaces

27 Oct 2022 by RickZeeland

You can practice with an online tool like RegExr[^] To match all spaces, + and - symbols try: ([ +-])+ To negate the result, try: ([^ +-])+ [Edit] To match lines, try: ([ +-]*\n)+

regular-expression

C# regex handle newline in headers

24 Apr 2023 by Richard Deeming

As discussed in the comments, Microsoft officially recommend using MimeKit[^] for all email-related code. It's free and open-source, and it's actively maintained: GitHub - jstedfast/MimeKit: A .NET MIME creation and parser library with support...

regular-expression

restrict values in a textbox

9 Sep 2010 by Om Prakash Pant

Please check the following modified code:Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress Dim allowedChars As String = "0123456789" If e.KeyChar ControlChars.Back Then If...

Javascript

regular-expression

Remove all the HTML tags and display a plain text only inside (in case XML is not well formed)

5 Jan 2011 by MarcoBot

NOTE: If you're really wanting plain text, then you should also be sure to decode the HTML entities (System.Web.HttpUtility.HtmlDecode()) on the resulting text, or you'll wind up with HTML/XML character entity text in your output, such as & and [ If you're going to immediately output the...

Regular Expression to Extract Inner Text from Anchor Tags

8 Feb 2011 by Bryian Tan

How to extract the text from a hyperlink and preserve other HTML tags

HTML

regular-expression

RegEx to validate string has 0 or 1 of each letter TRBL, no dups, any order

26 Feb 2011 by DaveAuld

In case you have never heard of it, this is an excellent site. Contains cheat sheet and testers. As well as a list of predefined expressions.regexlib[^]That is a suggestion, i will see if i can come up with a solution!Edit: See you posted your question on that site also :doh: I will...

regular-expression

RegEx to validate string has 0 or 1 of each letter TRBL, no dups, any order

26 Feb 2011 by OriginalGriff

I wouldn't use a regex: you could but it would be quite complex and difficult to maintain.Instead, I would sort the characters in my input string, and then check it.If two adjacent characters are the same, fail.If any character is not in the set 'B', 'L', 'R', 'T', failOtherwise, pass.

regular-expression

Matching duplicate xml tags using regex

29 Apr 2011 by Manfred Rudolf Bihy

Save yourself the pain and use XPath expressions[^] to dissect your XML.Regular expression are really no good for parsing nested structures.Best Regards,-MRB

regular-expression

need help with regular expression

6 May 2011 by OriginalGriff

Try:public static Regex regex = new Regex("para.*tabs.*", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant | RegexOptions.Compiled);Get a copy of Expresso[^] - it's free,...

regular-expression

RegularExpresion (fast question)

30 May 2011 by yesotaso

//Get related text blockstring subContent = Regex.Match(content,@"(?

regular-expression

C# RegEx: RegularExpressionValidator

6 Jun 2011 by Prerak Patel

1. You can use \d{10} instead of @"\d\d\d\d\d\d\d\d\d\d"2. What is this : expvalidator.IsValid.IsValid?Edit ----Because the default value of this property is true, it will return true if you query this property before validation is performed. For example, this might occur if you attempt...

ASP.NET

regular-expression

Regular expression for checking repeating sequences, e.g., 1234 or abcd

14 Jun 2011 by OriginalGriff

And I think you will continue looking: that is not something I would want to do with a regex, particularly since you do not know the length of the sequence to be checked for.Instead - since I assume this is for checking password strength - why not use existing code: Password Advisor[^] has...

expression

regular-expression

Weird c# Regex behaviour

1 Jul 2011 by Nyarlatotep

Hello, I cannot find a valid regular expression pattern for my needs.I have a sample string like this:I have four child of seven years each, [seven] years ago I had no child, because I was fourteennow, I want match and then substitute the words "four" and "[seven]".So I have...

C#4.0

regular-expression

What is the RegEx for this?

7 Jul 2011 by OriginalGriff

Try:public static Regex regex = new Regex( @"^$_\d*$\s*", RegexOptions.IgnoreCase | RegexOptions.Multiline | RegexOptions.CultureInvariant | RegexOptions.IgnorePatternWhitespace | RegexOptions.Compiled );string result =...

regular-expression

Regex for getting only words from string

18 Aug 2011 by OriginalGriff

That actually quite difficult, and probably not suited for a regex at all. The problem is that you want to accept the "Peter" from "Peter's" but discard "5th". What you really want to do is probably use a dictionary (a proper one, rather than an .NET Dictionary class) and check for actual words....

.NET

regular-expression

A regex help to filter text in brackets

25 Sep 2011 by André Kraak

You can use the Regex.Split Method[^].Use these links to find out how regular expressions work:.NET Framework Regular Expressions[^]Regular Expression Language Elements[^]

regular-expression

RegEx pattern needed

17 Oct 2011 by NewPast

Dim pattern="http.*\.flv"Dim pattern2="^http.*\.flv$"'^ means at the 1st of the line; $ means at the end of the line

patterns

regular-expression

Don't count spaces when counting words.

25 Oct 2011 by Jacobs76

I also use a Regex expression to count words, which returns the same number of words as MS Word. I wrap the Regular Expression in a String extension method to make it easy to use.public static class StringExtensions{ /// /// WordCounts Regular Expression /// ...

regular-expression

regular expression for strings which start with 1 and has a length of 25 characters

6 Nov 2011 by Sergey Alexandrovich Kryukov

1.{24}—SA

regular-expression

regular expression for strings which start with 1 and has a length of 25 characters

6 Nov 2011 by RaisKazi

Have a look at below Articles.Learn Regular Expressions (RegEx) with EaseThe 30 Minute Regex Tutorial

regular-expression

What is the meaning of this code

20 Nov 2011 by RaisKazi

Have a look at below CodeProject Articles on "Regular Expressions".The 30 Minute Regex TutorialLearn Regular Expressions (RegEx) with Ease

regular-expression

Searching using Regular expressions as in SQL Like

13 Jan 2012 by OriginalGriff

In this case, try:ClosedAccountFile_(\d+)_(\d+)_(\d+)_(\d+).txtThis matches your example, and separates each of the numeric values out into it's own group within the match.You have top realize that Regexes are much, much more complex than SQL LIKE statements - the simplest form of "%" in a...

C#4.0

regular-expression

a regular expression must have two decimal place

2 Feb 2012 by cutexxbaby

how to change this regular expession to must have two decimal place((0)+(\.[1-9](\d)?))|((0)+(\.(\d)[1-9]+))|(([1-9]+(0)?)+(\.\d+)?)|(([1-9]+(0)?)+(\.\d+)?) cause i try 0.0123 it work but if i try 1.123 it don't wok, if i try 0.1 is don't worki have try this...

regular-expression

please help me with the Regular expression

2 Feb 2012 by OriginalGriff

Try:Regex regex = new Regex("[a-zA-Z]");string result = regex.Replace(InputText,"#");Get a copy of Expresso [^] - it's free, and it examines and generates Regular expressions.

regular-expression

regex for removing select and option html tag

6 Feb 2012 by Andreas Gieriet

If you want to remove the whole select element with it's content, then you can do it with regex only if some constraints are met: no nested element of the same name (select in this case).Try this:string pattern = @"";CheersAndi

HTML

regular-expression

Remove all the HTML tags and display a plain text only inside (in case XML is not well formed)

15 Feb 2012 by Andreas Gieriet

I think the following Regex and HtmlDecode would do:string html = ...;string textonly = HttpUtility.HtmlDecode( Regex.Replace(html, @"|", ""));Any HTML construct that would not be stripped off properly by this?

The Regular Expression Skidmarklet

12 May 2012 by funboysclub

From Pins to Poops, your bookmark bar can do more. Read about the Skidmarklet... a JavaScript Bookmarklet and lessons in RegEx.

Javascript

regular-expression

Regular expression validation for 1-10 but not allowed zero

13 Jun 2012 by OriginalGriff

Try:^[1-9][0-9]{0,5}$

regular-expression

Leading zero not allowed length upto 6 digit only

18 Jun 2012 by Prasad_Kulkarni

Try this:^(?=[0-9]{3,6}$)0*[1-9][0-9]{2,5}

regular-expression

only 6 digit allowed & leading zero not allowed

18 Jun 2012 by OriginalGriff

This is a bit rough, because you don't describe it well:[1-9][0-9,]{0,5}Get a copy of Expresso [^] - it's free, and it examines and generates Regular expressions.

ASP.NET

regular-expression

RegEx + maximum length issue

9 Jul 2012 by Manas Bhardwaj

I guess it should be like this:bool result1 = Regex.IsMatch("ABCDEF", @"^[A-Z]{2}$");bool result2 = Regex.IsMatch("ABCDEF", @"^[A-Z]{2,2}$");bool result3 = Regex.IsMatch("AB", @"^[A-Z]{,2}$");bool result4 = Regex.IsMatch("AB", @"^[A-Z]{2,2}$");If a caret (^) is at the beginning...

C#4.0

regular-expression

Splitting String on Java

8 Sep 2012 by ridoy

http://www.java2s.com/Code/Java/Regular-Expressions/JavaRegularExpressionSplittext.htm[^]http://www.regular-expressions.info/java.html[^]http://www.javamex.com/tutorials/regular_expressions/splitting_tokenisation.shtml[^]http://forums.codeguru.com/showthread.php?292394-TIP-A-little-tutorial...

Regular expression for email validation

19 Sep 2012 by Aarti Meswania

if it is Windows Applicationset property of Textbox CharacterCasing = Lowerit will automatically convert uppercase letters to lowercase.string pattern="^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,3})$";and verify it when textbox's Leave event...

regular-expression