VS 2010 Simple Regex Pattern Matching?
Jul 1, 2011
I need an extremely simple regex pattern that matches anything within square brackets [].
Example:
This is a [test] text with [some] [examples].Required results: [test], [some], [examples].I don't want to get rid of the brackets, they should be included in the result (that should make it easier, right?)
If possible I'd like to exlude results that have whitespace in them, so things like [this string] should not be matched. If that gets too hard (probably not, but hey I can't even manage this :S) then I don't really mind, I can always check if the result contains whitespace myself.
I tried a lot of examples I could find online and ones that I could think of myself but none work. Note: I've been testing with the Visual Studio Find dialog (checking to use regular expressions obviously), maybe that's where the problem lies, because I don't really understand why some of these don't work...
Anyway, first thing I tried was simple: match the two brackets and one or more characters in between (that should be a +, right?)
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May 24, 2012
I have to validate a string using a regex pattern, I just can not figure out how to actually create it. In practice my string is composed of:
aw4d13-m12k4s It therefore can only contain characters from "a-z" and "0-9" separated by a "-" Who can kindly do it for me?
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Jan 21, 2012
have a 1mb file, should get the pattern from it
pattern should be like this
6numbers + 10&FF + 6numbers
in the hex binary editor it looks like this
[code].....
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Apr 24, 2012
It seems up until now I've never used Regex, nor even heard of it. But once I did I realized how extremely useful this is. Having said, it's been 2 days since I've began looking into constructing my own patterns. My most recent being for decimals. Is the pattern I provided below "proper"? and are there also any improvements I could be making for a more efficient patter, which would minimize any possibility of a loophole? [code] So for my use, this is doing what it's supposed to being doing under every test I can through at it. But do mind the 0. and .0, I have a function to normalize these as they are proper, I just pad the left and right accordingly. I found most regex questions asked here..and yes I am doing this in vb.net so it fits. If not, then feel free to move this post somewhere else better suited for the topic of discussion.
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Apr 22, 2009
I have text like following example
XXZZXXXZXXZXXXXZZZZZZXVVVVVXZVZ
and also I have two patterns like XX and ZZ I want to find longest possible string which include above given two patterns and return starting and finishing index of the array.
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Jun 10, 2011
I need A free source code for pattern matching(finger print matching) .
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Apr 24, 2011
I have the same intention as in this question:
Automatically call all functions matching a certain pattern in python
But I needed the solution (if technically possible) in VB.NET. Is that possible in VB.NET ?
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Mar 26, 2009
Is there any way to detect the area under a form window. e.g I want to create a grid and use what's in that grid to match patterns.orIs there any way to take a screenshot of the area under a form?
I have been searching all over for something that will do this and the only thing I managed to find was [URL]..I do not however want it for this application (If I really wanted to cheat at a game I would buy the software). But this is a perfect example of the pattern matching I wish to achieve.Edit: OK scratch that... I have managed to take a csreenshot of the region under a form, now has anyone any experience in pattern matching images?
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Apr 16, 2009
how would i get this USERNAME, USERID from this string:
Code:
<a href="javascript:attackWindow('USERNAME','USERID','50','RANDSTRING', 'RANDSTRING2')">
Adding the USERNAME to listbox, and then USERID into an array separated by a space.
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Mar 30, 2011
How ever it is returning wrong results. Any one spot the mistake. Needs to return the username / ID from every online user from [code]...
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Apr 17, 2009
i'm really new at the VB language only been doing for around 2 weeks.I hoping someone can help me with this, how would i get this USERNAME, USERID from a string
Adding the USERNAME to listbox, and then USERID into an array separated by a space. - I no how to do this part just the regex above remember i've only been doing for two weeks so i'm not very knowledged at this.
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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}$"
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Feb 21, 2012
I was considering validating some input using RegEx to match a pattern of
Firstname, Lastname
I largely have it, but there is so much variability in names that I'm not quite sure if any pattern is safe. In fact, in this case, I know that no pattern is safe, so I have built in a means for the user to accept whatever was entered, regardless of what it was, which isn't so great.
What I'm wondering is whether or not there is a safe Regex pattern that will cover names in this format, or will cover at least most of them. What I currently have is:
"^[A-Z][a-z]+, [A-Z][a-z]+"
But that will allow through things like Hiker, Shaggy, the, which is fairly silly, but shouldn't be allowed....I think. Does anybody use names with commas in them? I know that apostrophes are fairly common, though I'm pretty sure I can ignore them.
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Mar 7, 2011
Need a pattern to match a string which should NOT be --
777777777
888888888
999999999
Or start with 00 or 02 or 04. when i tried to go create a pattern to match the above requirements, i got it done by - Dim _pattern6 As String = "^(7+|8+|9+|(00|07|08|09|17|18|19|28|29|43|48|69|70|78|79|80|96|97).*)$". could not get the NOT MATCH part done.
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Jun 21, 2011
Regex in VB2008.I have a file system directory that my code is watching. When a file is placed in that directory my code kicks off a processing application. Based on the filename structure, the code will perform different processes. So I need to match the filename structure specficially to get the correct processes to run on that file.My file name structure is: IK2YYYYMMDD_VV.e;where YYYYMMDD is well, the year, month and day. And VV is a verison number from 00-99 If the new file saved in the directory match this structure then I want a TRUE returned. From a filewatcher I get the filename as an "e.Name" (FileSystemEventArgs) variable. My current code to see if it matches the baseline structure is;
Dim IKPred2Match as New Regex ("^IK2.*\.e$") Dim ValidIKPred2Match as MatchCollection = IKPred2Match.Matches(e.Name)I've tried many different regex match patterns, and just can't seem to find the magic one.
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Mar 3, 2012
I have to extract all there is between this caracters:
<a href="/url?q=(text to extract whatever it is)&
I tried this pattern, but it's not working for me:
/(?<=url?q=).*?(?=&)/
I'm programming in Vb.net, this is the code, but I think that the problem is that the pattern is wrong:
[Code]...
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Mar 3, 2012
I need your help to find the right pattern to extract a string that i need.. The problem is that i have to extract all there is between this caracters:<a href="/url?q=(text to extract whatever it is)& I tried this pattern, but it's not working for me! : /(?<=url\?q=).*?(?=&)/
i'm programming in Vb.net, this is the code, but i think that the problem is that the pattern is wrong:
Dim matches As MatchCollection
matches = regex.Matches(TextBox1.Text)
For Each Match As Match In matches
listbox1.items.add(Match.Value)
Next
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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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Aug 18, 2008
I am developing a regex/pattern tester in vb.net where I have three textbox's:
- Textbox1: Here I enter my regular expression for pattern matching in textbox2
- Textbox2: Upload the plain-texts from dB and then look for a match
- Textbox3: Displays the result of the search.
Now the issue I am having is when I enter a regular expression in **Textbox1** and click search it is unable to find any matching pattern even though I have made sure a matching text is present in the paragraph.But whereas, if I enter the non-regex word/text itself in Textbox1 it is able to find a match.
In my button click_event I have initiated all the relavent regex functions etc but still not able to figure out why it wont except regex expressions instead of the word itself.Here is the code I am using for pattern search:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim m As Match
Dim re As Regex
Dim matches As MatchCollection
[code]....
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Mar 12, 2012
I am working on my application to extract the value from my php page using with the regex pattern. I can extract the value using with the mystrings1 tags with no problem, but I can't be able to extract mystrings1 and mystrings2 tags in the same line.
[Code]...
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Jul 22, 2009
I'm trying to find a pattern in a string, I guess is very easy but I'm terrible in regular expressions. I have a big text and I need to find all the next type of pattern:
{a|b|c}
That can be also something like this: {a|b|c|s|f|f|ft|r} or any number of items inside but at least 2 items so the pipe symbol is another key. Is this an easy regular expression? I'm using vb.net 2005.
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Mar 1, 2010
Trying to parse a text file for records starting with an RH space and a date. I need to return the entire line. I expect to find about 6000 in the file. Example of a full record:
RH 09/27/08 11:49 11:49:00.224 COA292 H393 2664FB753 178 -54.82 8.98 C 431 264 13 040 34 24.45-074 58 57.93 H Snipit of text file:
[Code]...
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Dec 17, 2009
I have strings like:
1. Three (3) 10,000 gallons underground gasoline storage tanks.
2. Equip ID: (23-1)
I want to extract the '3' and the '23-1' and from the strings. I can rely on the first set being inside ( ) as the strings I need. The strings will be numeric characters plus the dash (anything between ( ) would be preferable.) What RegEx pattern would I use?
Here's what I have so far but it gets the first number and not the ones in ( ):
Function Extract_Stuff(ByVal LineText As String) As String
Dim myMatches As MatchCollection
Dim myRegex As New Regex("([0-9]+)")
myMatches = myRegex.Matches(LineText)
For Each successfulMatch As Match In myMatches
Return successfulMatch.Value ' should only be one match, return first
Next
Return ""
End Function
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Jul 15, 2009
I'm trying to assign the pattern regex looks for using an if statement like below. Then I use match to test, returning t/f from match.success. The patterns work fine, and finds what i am looking for in a test data set. The problem comes when I try to assign a pattern to test for via an if statement (assigned to SearchRegexString below) and then try to match using the appropriate object. so basically
SearchRegexString = "TestStringA"Object = new regex (pattern, options)object.match(string).success
[Code]...
doesn't work. match.success always returns false when the if then construct is used even if the phrase exists in the string. Is this a compiler issue, beyond the limits of Regex? what is going on?
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Aug 6, 2009
I have a project that uses regex, and while matching strings and regex syntax is working well [If rx.IsMatch(test) Then], i'd like to know (if any) a way to use regex to extract all instances of a pattern.
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Oct 1, 2011
I have a string with some custom formula like FVAL("A")+FVAL(B). I want to figure out all string inside FVAL() which does not have quotes around it.
So basically I want to extract out B because it does not have quotes around it.
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May 29, 2009
I'm using VB.Net in an ASP.Net 2.0 app to run some regular expressions that remove some unnecessary markup. One of the things that I'd like to do is remove span elements that don't have any attributes in them:[code]I'd like to remove the outer span elements. Unfortunately, my regex above gives me this as a result, since the closing span matches the first one it comes across:[code]
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Dec 3, 2010
I want to use Regex.Replace to replace a Match with a context sensitive value. I use the MatchEvaluator for this. But to make things simpler lets say I'm matching %v I want %v to be escapable, so if I use \%v it will not match. Anything else should match.
The pattern I came up with is this: (?:[^\]|^)%v It basically matches %v if it occurs at the beginning of the string, or if it follows any character except . It doesn't capture the first part of the expression.I know this isn't the "right" way to do it. But it worked just fine until I noticed that when I use this pattern in a replace, it includes the character before %v in the replacement(duh, right?)So, if I have ThisIsAValue:%v and I do Regex.Replace, replacing with the string Value, my result will be ThisIsAValueValue instead of ThisIsAValue:ValueI've tried googling this but the fact that "escape character" is so heavy in RegEx, all the results are geared towards the USAGE of escape characters instead of picking them out with a pattern.
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Sep 5, 2009
I've been working with Regex and I've run into something that doesn't make sense to me; I either misunderstood how the Multiline option works, I'm not using it right, or it really just doesn't work like it's supposed to. This is a little test I made:
[Code]...
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May 21, 2010
I need to find illegal characters in a windows forms textbox
The textbox text is sent as an sms text message and illegal characters are not allowed
e.g 1 client pasted some text from a word document into the texbox and the ' in msword appears as slanting ' in the textbox (see below)
e.g msword text - This is a new test of the Services
after pasting in textbox - This is a new test of the Services
The sms company have advised the slanting apostrophe is a unicode character
How can I find characters like above so I can remove them before sending the sms text
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