C# - Using Regex To Match Any Character Until A Substring Is Reached?
Jul 18, 2011
I'd like to be able to match a specific sequence of characters, starting with a particular substring and ending with a particular substring. My positive lookahead regex works if there is only one instance to match on a line, but not if there should be multiple matches on a line. I understand this is because (.+) captures up everything until the last positive lookahead expression is found. It'd be nice if it would capture everything until the first expression is found.
Here is my regex attempt:
@@FOO[(.*)(?=~~)~~(.*)(?=]@@)]@@
Sample input:
@@FOO[abc~~hi]@@ @@FOO[def~~hey]@@
Desired output: 2 matches, with 2 matching groups each (abc, hi) and (def, hey).
Actual output: 1 match with 2 groups (abc~~hi]@@ @@FOO[def, hey)
Is there a way to get the desired output?
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Apr 26, 2012
Quick RegExp problem (i hope). I need to identify a sub string from any string based on a regular expression. For Example, take the following strings:
[Code]...
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May 29, 2010
Am trying to match characters or combination of the characters i specify in any order they appears
vb
Regex.IsMatch(teststring "[nuls]")
what i want matched is either any single character, or combination of any of them in any oder. this means that it should not match any character not specified in the pattern.
For example
it should match
n,u,l,s,nu,un,lun, sl etc
not
ny, nx so etc or any other
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Apr 5, 2012
I am having an issue where I am using regex.Replace to replace part of a string. The basic idea is that I want to capture the beginning of the string then replace the end of the string with a value from code. For an example pretend I have a string that says "Test Number " followed by number and I want to increment that number. I capture the "Test Number " but when I try to concatenate that capture with the new number it treats the capture ($1) as a literal and replaces the entire string with $1[new number].
[code]...
This will output "We are on Test Number 2", as expected. how I can use a variable in the replacement string portion of the Regex.Replace when including a captured group?
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Jun 21, 2012
I'm creating a program in VB.NET to output multiple images. Some images will have the same file name. If there is multiple files with the same name I want to add "_1_" to the end of the file name. If the "_1_" file already exists I want to increment the 1 to be "_2_". If this file already exists I want to continue incrementing the number ultil it doesn't exist. So for example "filename", filename_1_", "filename_2_", etc. Here is the code that I have tried
[Code]...
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Jan 27, 2009
I've got a string which could or could not contain the substring "/announce". I would like to replace this part of the string with "/scrape" if its found...so far nothing tricky. But heres the thing: I only want to replace it if the '/' in it is the last occurring in the string. Heres what I mean:
Heres a scenario where I want the replace to happen:
MyStringWithRandomText/announce?x=19
would become:
MyStringWithRandomText/scrape?x=19
And heres another scenario where the '/' in announce is not the last '/' occuring in the string, so I dont want to replace it:
MyStringWithRandomText/announce/foo?x=19
I hope that made sense. Not sure if there is a way to handle this by only using RegEx
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Sep 22, 2011
wanted how you can get get characters starting from the right most of that string input, not from the left.
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Jun 21, 2012
"Testing.BSMain, Text: Start Page"
I would like to substring the value above and returning me only the value after the ": " in vb.net. How can i do that?
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Apr 20, 2011
How would you select the last part of a string starting at a specific character count. For example I would like to get all text after the 3rd comma. but I get an error saying "StartIndex cannot be less than zero."
Dim testString As String = "part, description, order, get this text, and this text"
Dim result As String = ""
result = testString.Substring(testString.IndexOf(",", 0, 3))
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Feb 22, 2011
I am developing an application proj on it.. In that, I want to separate charaters of the string which is of following stream, 18 Feb 2011 06:05:24 0601 110218055515,3,26;9948;9948;9947;9951;9956;9954;99 61;9958;9965;9967;125672N0801272E;110218055550; In this I want to separate as, Mail recieved time = 18 Feb 2011 06:05:24 msg recieved time = 110218055515 msg sent time = 110218055550 Position = 125672N0801272E water level 1 = 9948 water level 2 = 9948 water level 3 = 9947 water level 4 = 9951 water level 5 = 9956 water level 6 = 9954 water level 7 = 9961 water level 8 = 9958 water level 9 = 9965 water level 10 = 9967 I am only aware of IndexOf and LastIndexOf methods, and these methods are used to find the index of first and last occurence character position, but I want to split the string in subsequent characters too..
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Aug 1, 2011
I have :
[Code]...
I think I have explained my problem properly..
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Dec 13, 2011
I have a RegEx I am using in vb.net and i can get all the matches of the text but i want to get the first match of the text, this is what i am using.
[Code]...
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Mar 26, 2012
I'm using the following VB.net Code to find phone numbers in HTML and make them "clickable":
Regex.Replace(pDisp.Document.Body.innerHTML, "([0-9+ ]{3,6}[s]{1,1}[0123456789 -/]{4,15})", "<a href=http://DIAL/$1>$1</a>")
There appears an issue if the numbers contain white spaces, for example:
089 12233 455
This will be replaced with:
<a href=http://DIAL/089 12233 455>089 12233 455</a>
Is there a way to get
<a href=http://DIAL/08912233455>089 12233 455</a>
instead?
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Apr 17, 2011
The quick brown fox jumps over the lazy dog" is an English-language pangram, alphabet! that is, a phrase that contains all of the letters of the alphabet. It has been used to test typewriters alphabet. and computer keyboards, and in other applications involving all of the letters in the English alphabet.I need to get the "alphabet." word in regex. In the above text there are 3 instances. It should not include "alphabet!". I just tried regex with
MatchCollection match = Regex.Matches(entireText, "alphabet.");
but this returns 4 instances including "alphabet!". How to omit this and get only "alphabet."
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Mar 17, 2011
validating a 9-digit number.
CANNOT BE -----------
000000000
111111111
[code]....
I had just managed to get the first piece done -- "^(??!0+|1+|2+|3+|4+))d{9}$"
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Dec 18, 2009
I would like you to help me out with the strings, which I find it difficulty to get from the html class. The first string I uses as pattern1 string, which it connected to the server to get the showtitle string from the html class, it is working fine. I couldn't be able to get the string on the second paragraph from the html class with pattern2 string, as the text goes on the blank. I need to get the string from the html class. The third pattern string, I am trying to get the string at the end of the html class so I got the blank text.
[Code]...
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Mar 15, 2012
i have to match a regex HTML
inputtext:-<div class="header_item_wrapper">
<img src="http://do.a.bpcdn.net/do_img/global/header/buttons/icon_stats_lvl.png?__cv=b84d7d86e451fdfbaa2115080867b100" width="16" height="13" alt="">
<span>4</span>
</div>
[Code]...
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Feb 8, 2012
This is a pretty complex regular expression that returns an array of key/value pairs from a proprietary string of data. Here is sample of the data, in case the express can not be used in .Net and another method needs to be used.
0,"101"1,"12345"11,"ABC Company"12,"John Doe"13,"123 Main St"14,""15,"Malvern"16,"PA"17,"19355"19,"UPS"21,"10"22,"GND"23,""24,"082310"25,""26,"0.00"29,"1Z1235550300000645"30," PA 193 9-05"34,"6.55"37,"6.55"38,"8.05"65,"1Z1235550300000645"77,"10"96,""97,""98
If you look closely you see its key,"value",key,"value" The only guarantee on formatting is that each key value pair is separated by a comma, and each value will always be encased in double quotes. The main problem (the reason you cant explode it) is the poor choice of the previous coder to separate keys and values with the same character as the entries. Anyways, out of my hands. Here is a working PHP example.
function parseResponse($response) {
// split response into $key, $value pieces
preg_match_all("/(.*?),"(.*?)"/", $response, $m);
[code]....
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Sep 15, 2010
I'm having a problem trying to match a certain input.The rules of the input is the following: Whole numbers are entered into a text box and they must be separated by a space. There can be anywhere from 1 to infinite numbers. The last character entered must be a digit (no trailing space). Every space delimite must be only 1 space. I'd prefer to handle this all in regex.
My regex:
(?=\d$)^(\d+[\x20]?)+$
([\x20] is a space character)
It doesn't like the lookahead before the carot nor does it like a lookbehind after the $. If I leave the lookahead out, ^(\d+[\x20]?)+$ will match as needed for everything except to ensure the last character entered is a digit.
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Apr 6, 2009
1 <span class='Txt9Gray'>Decisions ( </span> I'm trying to grab the '1' from this string. Before the '1' is another span, but I can't use that as a marker because it can change from page to page. Is there any regex expression that can simply grab the '1'.
The word 'Decisions' will always exist. That's my main way to find this line. Here's what I have been trying to no avail:
[Code]...
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Jun 3, 2011
I'm wanting to search a RTB for all X coordinate values and convert them to SI mm units.
I have two issues: 1. My code is stopping after the first instance of match.success, I'm guessing i'm using nextmatch incorrectly? I have also tried matchcollections with no success.
2. I fear once we get it progressing to the next X value, any multiple X values with the same dimension will be replaced with my replace command, causing the new value to be converted again.
Dim MatchObj As Match = Regex.Match(RichTextBox1.Text, "[Xx](?<X>(d*.{1,1}d{1,4}))(s)*")
If MatchObj.Success Then
[Code]....
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Aug 11, 2011
I have a simple string : s:10:"char1";s:2:"13";i:1;a:8:, i'd like to match that 13 from inside " ", in PHP i would do something like :
/s:dd?:"char1";s:dd?:"(.*?)";i:dd?;a:dd?:/i but i'm not good in vb's match methods,so please give me full example how i can match what i need ( it is possible to be multiple matches (2) ).
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May 27, 2009
I have the following VB.Net 2.0 in an ASP.Net app:
output = Regex.Replace(output, "<p>(?:(?:<!--.*?-->)|&(?:nbsp|#0*160|x0*A0);|<brs*/?>|[su00A0]+)*</p>", String.Empty, RegexOptions.Compiled Or RegexOptions.CultureInvariant Or RegexOptions.IgnoreCase Or RegexOptions.Singleline)
Example stuff it matches well:
<p></p>
<p> </p>
<p><br/><br/></p>
<p><!-- comment --><!-- comment --></p>
[code]....
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Dec 28, 2011
I'm using this code
[Code]...
I need it to match both 12345 (5 char zip) and 12345-1234 (10 char zip) in 1 single group. Is that possible?
[Code]...
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Dec 2, 2011
Well my question is simple, I want to match a string with following attributesNo white spaceMust start with a letterMust not contain any other special characters other than nderscore
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Jan 3, 2010
I have my regex setup, which works prefectly:
vb.net
Dim testStr As String = "<option value=""18621335"">graham23s</option>"
Dim rx As New Regex("<option value=""(d+)"">(.+?)</option>")
[code]....
When i put it into my own application i have done:
vb.net
Dim stringSource As New Regex("<optionvalue=""(d+)"">(.+?)</option>", RegexOptions.IgnoreCase Or RegexOptions.Singleline)
Dim stringMatches As MatchCollection = stringSource.Matches(stringCle
[code]....
what i am having trouble with is getting the values while in the foreach loop.
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Jun 21, 2012
is there quick way to add every match from matchcollection to datagridview in same time?I get thousands of matches from alot sites and it takes alot time to finish that, im looking for some great way to do it faster.
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Aug 9, 2011
I need a regex match to get this link from the webbrowser [URL]
The last part of the link (&c=CP7hx4S4ie6JWBDXpPL2oJjf8iM&hl=en_GB) changes everytime that why i need to use regex
HTML CODE
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="description" content="MailCatch: Free, Temporary, Anonymous, Emails"/>
[Code].....
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Mar 30, 2010
I need a regex match to get this link from the webbrowser [URL]The last part of the link (&c=CP7hx4S4ie6JWBDXpPL2oJjf8iM&hl=en_GB) changes everytime that why i need to use regex
HTML CODE
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8"/>
<meta name="description" content="MailCatch: Free, Temporary, Anonymous, Emails"/>
[code]....
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Jan 5, 2012
I have to match string like "DAY1","DAY2","DAY3"....."DAY31" with regex in vb.net. I tried something like this - ^?DAY(0[1-9]|[12][0-9]|3[01])$ but it did not work.
The pattern should have succesfull match if the source string is either DAY1 or DAY2 or DAY3 to DAY31 like so.
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