Click here to Skip to main content

Submit your article

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

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

Visual FA Part 1: Understanding Finite Automata

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.

All Articles

Regular Expressions

Regular Expressions - Check for char between other chars

4 Dec 2010 by #realJSOP

I wrote an article about string splitting you might be interested in. It wouldn't do exactly what it looks like you need, but it might provide a starting point.Persistent String Parser[^]

regular-expression

regex to find Javascript functions

6 Dec 2010 by #realJSOP

If you're using .Net, you can probably load the javascript into a BrowserWindow, and then use the DOM to extract the method names (let the DOM do the parsing for you). How you would specifically go about doing this, I leave to you as a programming exercise.

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.

regular-expression

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

20 Jan 2011 by #realJSOP

You might want to consider using the HTMLAgilityPack:HTMLAgilityPack at Codeplex[^]I don't know for sure if there's a method in that library that fixes missing tags HTML, but you might want to check it out.

regular-expression

pattern needed for validating string which can contain either no space or 2 spaces

19 Apr 2011 by #realJSOP

Why use a regular expression? You didn't specify a language, so the following is in C#:var count = (from c in myString where c == ' ' select c).Count();valid = (count == 2 || count == 0);Depending on the environment/context, I'd consider wait until it's...

regular-expression

comma separated values

26 May 2011 by #realJSOP

I wrote an article for this, but it doesn't use Regex.Persistent String Parser[^]

regular-expression

Parsing variables with commas

8 Jun 2011 by #realJSOP

Well, I would first "normalize" the string so that you're always woirking with the data delimited same same way:0) Call string.Replace(", ", "")1) Traverse the string looking for a right bracket (']') character. 3) If you find one, get the substring comprised of every character up to...

regular-expression

c sharp regex replace first or last character of any word

9 Sep 2011 by #realJSOP

Why use regex? // I would personally make this an extension methodpublic static string ReplaceOccurrence(this string str, string target, string replacement, int count){ int pos = -1; int counted = 0; string result = ""; do { pos = (pos >= 0) ?...

regular-expression

Regular expression validation for email id and phone number for the whole line instead of each word of a file in C#

18 Oct 2016 by #realJSOP

0) I think your email regex is rather weak. Try this one:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?1) Why not just split the string on spaces, regex the email address, and then run the phone number...

regular-expression

Problem with regex help

4 May 2021 by - Uli Minotti

Hello, I have a simple question in regex. I need to get the first 3 characters of that string ("newtest-test"), the dash and the 2 characters after the dash (like that "new-te"). I use this regex "\w{3}\-\w{2}" but return "est-te". What's...

regular-expression

Finding a string should have a particular letters?

1 Dec 2014 by /\jmot

See here..The 30 Minute Regex Tutorial[^]

regular-expression

Bluetooth COM port search in registery

19 Oct 2011 by 01.mandar

i have written Bluetooth code in win32 which detected bluetooth devices in range andafter installing bluetooth device on my PC it creates more than one COM portto get serial port i search in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSetbut some time the newly installed bluetooth do not...

regular-expression

creating regular expression pattern in c#

1 Jul 2014 by 204.sharma

Hi, I want to create a regular expression to search a pattern. My search pattern is 4 alphanumeric / 5 alphanumeric / 2 alphanumeric. like (AP11/0258A/12).i am using this const string Pattern =...

regular-expression

Regular Expression in search (VB.net)

5 May 2011 by 555336

Hello, I have a massive problem in regular expression in search. Well I have a textbox and a button, here the code I put in the button event for the search by using regular expression:The problem I'm having is, I want search a mistyped word from letter A to Z both in lower and upper-cases....

regular-expression

Regular expressing for the following string

22 Aug 2017 by @BangIndia

I have string with is having the alpha numeric noted as below. Ex 1: abc1232323acvc23232avac Ex 2: abc1232bcsb Here I want to check the string is alpha number as well as continuous numeric length should not exceed more than 7. I have tried but I couldn't get the proper regular expression. ...

regular-expression

Regex for alphanumeric

6 May 2014 by _Asif_

Try below one. ^[A-Za-z0-9]{6,15}$-Asif

regular-expression

Create regex for password validation

9 Sep 2014 by _Asif_

Try this(?=^.{8,}$)(?=.*\d)(?=.*[a-z])(?=.*[A-Z])(?!.*\s)[0-9a-zA-Z@\-]*$Look RegExLib[^] for other examples

regular-expression

Need to parse text using Regular expression

1 Jan 2015 by _Asif_

How could i parse below text identifying xml tags using regular expression.Dear This is to let you know that your following Tickets have been confirmed. Total Amount is Thanks for doing business with...

regular-expression

Regex for any type of numeric value

26 May 2015 by _Asif_

Try this "\d+(\.\d+)?". You can find plenty of examples over the net. Just Google!

regular-expression

JS regex to match spaces and non-alphanumerics

4 Feb 2018 by A_Griffin

I need a regex - well, two: I want a JS regex to replace all whitespace with a hyphenvar str = 'some string'; var regex1 = ?????; str = str.replace(regex1, '-'); and another to replace all non-alphanumerics with nothing - ie remove themregex2 = ?????; str = str.replace(regex2, ''); What I have...

regular-expression

Help needed to verify my understanding of regex coding

28 Dec 2015 by aajoyce

I'm a real newbie at regex. I have a banking program and it has regex rules for importing transactions. But sometimes the rules just don't work right. I'm trying to understand just what the rules are saying so that I can make them work the way they should. I think I've figured out some of it...

regular-expression

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

replace all occurrence of :) with sometext in javascript regex

18 Feb 2013 by Aarti Meswania

my string is ...var patt1='/:)/g';alert(':):):)'.replace(patt1,"*"));o/p = :):):)I want o/p***How to do?I am newbie in regex...please help to solve this :)

regular-expression

[Solved] regex string spliting c#

20 Aug 2013 by Aarti Meswania

Hi experts,string Input = "@a = '1', @b = 'hello@123.com,hi@123.com'"I want to split Input string and want output as below using regexary[0] = a = '1'ary[1] = b = 'hello@123.com'I want to split by @ and it should not be in single quotesthanks in adv.

regular-expression

[Solved] regex string spliting c#

20 Aug 2013 by Aarti Meswania

I got solution after some trial & error,Hope it will useful for people have same requirementstring Input = "@a = '1', @b = 'hello@123.com,hi@123.com'"string Output = Regex.Split(Input, @"(?=@\w+[ =|=])@")(condition)true|false(?=@\w+[ =|=]) condition @ if true then split...

regular-expression

Regex for find files which contain tag but not contain tag in visual studio project

28 Nov 2013 by Aarti Meswania

Hello experts!I want to search criteria usingRegex for find all files which contain word1 but not contain word2in visual studio projectplease help

regular-expression

Why yacc doesn't parse?

19 May 2022 by abc174

Hi, I'm working on a define a new language with lex and yacc. However, lexer works fine but yacc doesn't. I'm not pretty sure if my grammar is completely right. I get "syntax error in input" from yacc. My lexing.py: # lexer.input(data). Reset...

regular-expression

Need a Regular Expression to split all SQL queries using C#

28 Jun 2011 by abdugo

I need a Regular Expression to split all SQL query in a file..like that file I need to split all queries from it.. to an array..CREATE TABLE IF NOT EXISTS `collections` ( `collectionid` int(3) unsigned NOT NULL auto_increment, `collectiongroupid` int(2) NOT NULL, `name`...

regular-expression

C# richtextbox find and replace

12 Apr 2016 by abdulsafran

Below is my input and expecting outputInputකtext text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text text textගExpecting OutputThis is my regex find and...

regular-expression

C# richtextbox find and replace

12 Apr 2016 by abdulsafran

I found the solution. Thank youstring replacedString = Regex.Replace(richTextBox1.Text, "ක([^ග]*)ග", @""); richTextBox1.Text = replacedString;

regular-expression

How to replace particular many spaces by single space...?

16 Jan 2011 by Abhinav S

Try something like -Regex r = new Rexgex(@\"\\s+\");inputstring = r.Replace(inputstring, " ");

regular-expression

searching for numbers in a given string.

19 May 2011 by Abhinav S

You can use Regex.Replace() to do this.e.g. Regex.Replace(myString, @"\d", string.empty);

regular-expression

Regex in .Net: Which characters are recognized by \s

15 Apr 2014 by Abhinav S

\s matches any white space characters - http://msdn.microsoft.com/en-us/library/az24scfc%28v=vs.110%29.aspx[^].

regular-expression

How to make validation for file path in asp.net.

19 Mar 2015 by Abhinav S

Try these links -Regular Expression to Validate File Path and Extension[^]How To Use Regular Expression To Validate File Path[^]

regular-expression

find and replace href in DownloadString

27 Mar 2015 by Abhinav S

String.Replace[^] will help you replace string with other text.

regular-expression

Extract Sub string between two string pattern using Javascript/JQuery

20 Jan 2015 by Abhiroop09

Hello,I am new to regular expression. I need to extract between two string pattern ([[tag: & ]]) and for each occurrence.For Example:If the text is :Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque...

regular-expression

Linq performance issue

19 Dec 2012 by Abhishek Pant

have a look at thisWhy LINQ to SharePoint is a Bad Idea![^]

regular-expression

Require Validation Expression

14 Aug 2010 by Abhishek Sur

\d+/2010Do you want this?Replace the current year in the string with DateTime.Now.Year

regular-expression

Complex text cleaning using regex on Python/notepad++

29 May 2021 by adideva98

Since I am new to Regex this question might seem silly. I have a huge text file in the Devanagari script (nearly 70k lines). The majority of the file is in Devanagari except for the word tags which are in English alphanumerics. This file has four...

regular-expression

check if a string contains anything except spaces and letters

29 Jun 2015 by Aditya_Goud

i am working on a project where i need to make validation to allow only letters and spacesanything except that should return false.. how can i do this ?i have my working codebool usernamecheckchar = txboxName.Text.Any(x => !char.IsLetter(x)); if (usernamecheckchar ==...

regular-expression

Regular Expression Nightmare

30 Jun 2010 by Adrabi Abderrahim

this is by Perl (just example)#!/usr/bin/perl -wuse strict;my $url = 'adrabi';$url=~s/(]+)>)(.*?)()/$1$4/;print "$url\n";my $q = "";$url=~s/$q/You Win/;print $urloutput :

regular-expression

How to get the content between the specific string using PHP

29 Oct 2014 by Adrian Fatol

Try this:$text = 'This is testing \title{string} with \title{test} tags.';preg_match_all('/\\\title\{([\w]+)\}/', $text, $matches);var_dump($matches);

regular-expression

Get the most appropriate sentence

1 Nov 2014 by Afzaal Ahmad Zeeshan

If you know the exact string then you can convert the string to array, and then extract the string at that index. The index of the city is known in the template string. Just extract the string at that index, make sure that the template is followed while typing the command.Something like...

regular-expression

Objective - To extract the decimal data (length information) from the random incoming string patterns.

29 Aug 2013 by AG-46677

Objective - To extract the decimal data (length information) from the random incoming string patterns.Sample Incoming string patterns - Pattern 1- some text. Total Pipe length for this project are 1234.5 m. some text...Pattern 2- some text.Total Pipe length for this project 500.0 m some...

regular-expression

Regular Expression help needed

9 Jan 2012 by agent154

I'm trying to figure out a regex that will match only a properly formatted string, and return false if any part of it is invalid.My string is in the format of filesystem wildcards separated by a comma to allow for multiple wildcards to be put in one string. I am able to come up with a regex...

regular-expression

regular expression to accept space and minus sign ?

31 Oct 2012 by Ahmedwaheed

try this expression^-?\s?[0-9]{1,}(\.[0-9]{2})?$

regular-expression

How to count the length of match string if we have only its length and its regular expression in javascript ? this is one hackerrank problem.

23 Oct 2019 by Akash Tawade

Input:- ((ab)|(ba)) 2 ((a|b)*) 5 ((a*)(b(a*))) 100 Output:- 2 32 100 here we have Only regex(r) and string length(l) as a parameter in function.....from these two parameter we have to find count of string which is match to our regex. What I have tried: var count = 0; ...

regular-expression

Regular expression for value not greater than 6 with 1 decimal place

28 Apr 2017 by Akhil Jain

i have made this for 1 decimal place but don't know how to limit upto 6 accepted value 6.0 1.1 0.0 2.1 5.9 not accepted 6.1 6.01 6.2 0.00 5.99 "^[0-9]+(\.[0-9]{1,1})?$" What I have tried: i have made this for 1 decimal place but don't know how to limit upto 6 ^[0-9]+(\.[0-9]{1,1})?$"

regular-expression

Regular expression for value not greater than 6 with 1 decimal place

27 Apr 2017 by Akhil Jain

^([0-5]\.\d|6\.0)$ i got it

regular-expression

Regular expression for number only which accept decimal if user inputs it.

3 May 2017 by Akhil Jain

i want a Regular expression for Numbers only with no special character that should accept decimal value with 1 decimal place accepted value 3 3.2 4 5 not accepted value abv '' ! # $ % & *) () 4.55 . 123ert.123 ftr456.34 123tr 3. What I have tried: i want a Regular expression for Numbers...

regular-expression

Regular expression for number only which accept decimal if user inputs it.

3 May 2017 by Akhil Jain

(-?[0-9]+(\.[0-9]+)?)

regular-expression

extract text from … tag or directly from an HTML file

26 Jun 2012 by akhilgaur1988

I have an HTML page that contains some filenames that i want to download from a webserver. I need to read these filenames in order to create a list that will be passed to my web application that downloads the file from the server. These filenames have some extention.I have digged about this...

regular-expression

How to match defined pattern using regular expression in Javascript

8 Sep 2011 by Al Moje

Hi,See this link if it could help.Get URL Parameters Using JavascriptAn easy way to parse the query string in your URL to grab certain values.Regards,Algem

regular-expression

Get a text inside square brackets with regex ( regular expressions )

18 Jul 2016 by Ali Sheikhizadeh

Hi , I want to replace String that is like this : [TEST] [QUESTION]A text is between two Square BracketsWhat I have tried:I tried to use Regex with this pattern : [\[][A-Z0-9][\]]But this pattern only get strings like this : [A], [B], [C], [1]

regular-expression

Get a text inside square brackets with regex ( regular expressions )

18 Jul 2016 by Ali Sheikhizadeh

Just Used : [\[A-Z0-9\]] And Worked

regular-expression

Need help for Compare validater issue in asp.net.1.1

24 Jun 2013 by Am Gayathri

Hi ,In my project am using one comparevalidator to check the value in textbox is integer or not.

regular-expression

Regular expression for atleast one numeric,atleast one alpha and with some special characters and min length is 8

8 May 2014 by Amalraj Ramesh

try this i hope this ill help you.((?=.*\d)(?=.*[A-Z])(?=.*\W).{8,8})

regular-expression

Conditional Reg Ex Help

2 Jun 2011 by ambarishtv

use this pattern :)/() ([^)/g

regular-expression

How to split string using regular expression in c#.

16 Jan 2015 by Ambati Dilip

Hello,I have a string Input: Mynameisblablabla.IstayatblablaNow i need a regular expression in c# where it automatically splits the string intoMy name is blablabla. I stay at blablain single step.

regular-expression

What regular expression should be used for HTML tags?

1 Apr 2014 by Ami_Modi

I want to replace all the HTML tags in string with space. What regular expression should I use for that?Input: Hi [FNm] [LNm]:Thanks for downloading.Output: Hi [FNm] [LNm]: Thanks for...

regular-expression

What regular expression should be used for HTML tags?

1 Apr 2014 by Ami_Modi

One more answer I got. If anybody referring this question can try this:"]*>"

regular-expression

Regex C# with 2 patterns. Possible to know which pattern matched?

12 Mar 2017 by Amien90

Regex regex = new Regex(@"a|b");Match match = regex.Match(line); if (match.Success){}I want to know if the line matched on "a" or "b" .. because based on that result i want to do different thingsWhat I have tried:my best solution was to split the regex itself if...

regular-expression

Use RegEx to filter for a variable length numeric series?

15 Oct 2011 by Amir Mahfoozi

I suggest \d+ (at least one digit)but if you want to capture scientific numbers :[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?test it here :http://www.regular-expressions.info/javascriptexample.html[^]

regular-expression

regular expressions help!

24 Oct 2011 by Amir Mahfoozi

i. Find a "a" followed by either zero or more times "aa"s should be seenii. Find a "a" followed by either zero or more times of this pattern : (zero or more times "b" followed by zero or more times "ab" followed by zero or more times "ab" )iii. Find a "b" followed by either zero...

regular-expression

Regex Logviewer

16 Jun 2013 by Amit Bezalel

Using the power of regex to parse your logs

regular-expression

Regex for any type of numeric value

26 May 2015 by Amit Samnani

Hi,everyone Question: i have one text-box and i want to allow only numeric value to this text-box like i.e .2,2.3,23.233 Solution: For the above, i already try regex ("^\s*(?=.*[1-9])\d*(?:\.\d{1,4})?\s*$")but still it can`t be allow after point value like...

regular-expression

Regarding Applying validation in textbox through Regular Expression.

18 Oct 2014 by amit29391

refer thishttp://stackoverflow.com/questions/2842823/how-to-prevent-white-spaces-in-a-regular-expression-regex-validation

regular-expression

build a regex to search underlined text

19 Apr 2011 by amit_upadhyay

Iam having a trouble implementing a certain technique - selecting next text in a richtextbox control which is underlined.You see iam trying to make a word processor but am stuck. I have been able to write the code to select each word one-by-one on pressing F1. Now i want to select only those...

regular-expression

find replace text from file - fastest method ?

12 Nov 2011 by amit_upadhyay

Alright first my situation :1) a text document which has content like :uber|uber|ultrataxi|taxi|taxi cab|cab|minicab|airport taxi|airport transfergenitalia|genitalia|genitalsskincare|skincare|skin care|cosmetic|natual skin care|natural skin...

regular-expression

string replace with regex while ignoring a pattern

13 Nov 2011 by amit_upadhyay

Hello, i want to create a regex to be able to replace a string with another string while also making sure that a particular pattern is avoided from being replaced.Eg : string is - I wanted to buy a house and this house is so good that i will {buy|purchase|rent|acquire} this placeThe...

regular-expression

how to make a regular expression in a string after a certain line

1 May 2013 by amitesh1989

Hi coder i am new in regular expression so i don't know much about i will show you what i have and what i did. String on which i have to put regular expression i have two search ticket number in it like 220-7242648582 for this i use [0-9||-]{14} regexnow the think is that it is a repeated...

regular-expression

how to show data in next line of datagridview which fetch from datable using regex

3 May 2013 by amitesh1989

Hi I have a list of string in which i have few name in the same line when i use my code i got all name in the same series what i want is to first user in first row of datagrid and second in second. here is my code:using System;using System.Collections.Generic;using...

regular-expression

How to get one string using condtion of two string using regex in asp.net

6 May 2013 by amitesh1989

I have a string in which i have to find PNR number. To get PNR number i have to check two condition (a) First in Passenger should be more than one.(b) Second String contain ITINERARY REBOOKED.if both upper condition exist then only PNR number extract from the string otherwise noexample...

regular-expression

How to match two condition on same string to get one output using regex

8 May 2013 by amitesh1989

I have a string in which I have to find PNR number. To get PNR number I have to check two condition:First in Passenger should be more than one.Second String contain ITINERARY REBOOKED.If both condition met then extract only the PNR number from the string otherwise return nothing.My...

regular-expression

Regex to match multiple name and avoid single name

9 May 2013 by amitesh1989

I have case. I want to select multiple passenger names from the input. if input contains only single passenger name then avoid that input string.I have create regular expression in which It's work for multiple names from the input but it's not work, when I want to avoid single passenger name...

regular-expression

Regex to match multiple name and avoid single name

9 May 2013 by amitesh1989

i use this regex (2\.[A-z]\S(.+)) it will fetch multiple pax and avoid single pax

regular-expression

How to divide series of names into different rows

10 May 2013 by amitesh1989

I have a list of name in series like:1.KHOON/FRANCIS 2.MEH/SAY 3.MEH/PRAY 4.MEH/MAW 5.REH/LAW 6.REH/PAE 7.REH/DO 8.REH/LEE 9.REH/HEHnow what i want is to show these name in grid like thisKHOON/FRANCISMEH/SAYMEH/PRAYMEH/MAW and so on i dont want number and . into...

regular-expression

How to split name in different row of gridview

10 May 2013 by amitesh1989

Hi coder i have a question which i won't be able do so may be you guys can help mei have string which contain name in series like thisFXP/R,U 1.WROBEL/TERESA 2.WROBEL/MAREK ...

regular-expression

how to extract string between two symbols

14 May 2013 by amitesh1989

I have a string in which i want to fetch number before TTL using regex how can i do thatthis is my string WPNCB« 19AUG DEPARTURE DATE-----LAST DAY TO PURCHASE 21MAY/2359 BASE FARE EQUIV AMT TAXES ...

regular-expression

how to extract string between two symbols

14 May 2013 by amitesh1989

i just made some changes in my regex and it works(?:\b)([0-9]{0,}[.][0-9]{2})(?=TTL)

regular-expression

how to extract string between two symbols

14 May 2013 by amitesh1989

just made some changes in mt regex and it works(?:\b)([0-9]{0,}[.][0-9]{2})(?=TTL)

regular-expression

How to select only selected string from a large string

24 May 2013 by amitesh1989

I have a large string in which two small string are same but not exactly what i want is to select only one string from that large string not the other stringthis is my stringRP/NYC1S21DD/NYC1S21DD WS/SU 6MAY13/0503Z 29WHVE // i want to select 29WHVE ...

regular-expression

Regular Expression request

18 Apr 2012 by AmitKumar89

Hi there,Use this JS in your button click.function countWords(){ var txt=$find("TextBox1"); if(txt.value.split(' ').length

regular-expression

Regex for -100 to 100 with 2 decimal digits.

26 Aug 2014 by Amol Lendave

Hello friends, I want regular expression for validating input between -100 to 100 onlyInput like 99.99 and -99.99 and 0 tooCurrently i used : ^100$|^\s*(\d{0,2})((\.|\,)(\d{0,2}))?\s*\%?\s*$ Above reg-ex will allow 0 to 100 decimal up to 2 digit.Please Help Me ASAPThanks...

regular-expression

Text box validation with alphanumerics with some specific special characters

28 Feb 2014 by amshekar

1)How to restrict the user to enter only alphanumerics with $ @ * #using javascript and also it should allow user to click backspace delete and space any help ?2) How to make text box amount field with 3 decimal by defaulti.e if user enters ant digit like 6 it will post 6.000 to...

regular-expression

C sharp Replace Function

15 Oct 2012 by Anandkumar D

You need to handle it (style with div) separately........data.Replace("", "").Replace("", String.Empty).Replace("", "").ToString();

regular-expression

Regular expression with word sequence maintain

27 Aug 2015 by Anant K Sinha

I would like to write pattern for regular expression which will maintain the sequence of word.For Example:I have one string like below: string input="I visited this place with my friends twice. Normal outdoor sitting but yet pleasing. Food is very delicious and sumptuous. However...

regular-expression

How can I replace "span" in a string, but only if it's the HTML tag?

14 Feb 2023 by Andre Oosthuizen

Assuming that your text of - Lorem ipsum span sit amet, consectetur adipiscing elit. Sed span velit, vestibulum vel pellentesque sed, mattis et span. Morbi justo est, pharetra vitae nisl at,

regular-expression

Regex Vs Xml taking forever

15 Oct 2010 by Andreas Gieriet

This regular expression has several flaws:1) looks to my that it has too many groups: (...)2) too many * that lead to an exhautiive search (n-square of the document length?)3) if it is multiline, the . will not match the end-of-line4) there must be some non-greedy repetition, otherwise,...

regular-expression

Regular Expression - Finding the proper pattern

2 Feb 2012 by Andreas Gieriet

Brute force?\b[Mm][Yy]-[Nn][Aa][Mm][Ee]\bAndi

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

regular-expression

Decode quoted-printable data by Regex

14 Feb 2012 by Andreas Gieriet

A "single-liner" to decode quoted-printable data.

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?

regular-expression

Reguler Expression validation to allow blank/empty and decimal/integer values

29 Aug 2012 by Andreas Gieriet

So, you allow (I assume with leading and trailing spaces)1. lines of only spaces, zero to any number of them2. plain integral numbers3. numbers with decimal part and optional part before the decimal partThe regex for these individual parts is:1. ^\s*$2. ^\s*\d+\s*$3....

regular-expression

Help needed in Regular Expression

6 Sep 2012 by Andreas Gieriet

Guessing from your question, I unerstand that you have groups of 5 to 6 digits, plus mixed in some single a-z characters (none or one per group).If you have to only take these groups that match your constraints (at most one [a-z] in a group), then I have the following solution:string...

regular-expression

C# regular expression

20 Jan 2013 by Andreas Gieriet

How about:...string input = ...;Match match = Regex.Match(input, @"\w+\s*=\s*(\d+(?:\.\d+)?\s*[A-Z]+)");string size = match.Success ? match.Groups[1].Value : string.Empty;...Depends very much on the input string if the @ and { are relevant to properly match the text.Note: If you...

regular-expression

Regular expression - having a braindead moment on this string

20 Feb 2013 by Andreas Gieriet

To parse source code, you should:treat the whole file as "singleline", i.e. the Regex should not treat new lines as special charactersallow whiespaces between language tokens (all these \s* look a bit ugly, but is necessary to catch all entries)carefully tokenize, e.g. if you only expect...

regular-expression

Regular expression to validate string

26 Feb 2013 by Andreas Gieriet

Use the following approach:string input = ...;string pattern = @"^[\s0-9"+Regex.Escape("-+().,")+"]+$";if (Regex.Match(input, pattern).Success) { /* success actions... */ }CheersAndi

regular-expression