regex,vb.net , Regex to check if string is alphanumeric separated by commas or a single alphanumeric string


Regex to check if string is alphanumeric separated by commas or a single alphanumeric string

Question:

Tag: regex,vb.net

I have the following right now which works fine if the string is alphanumeric and separated by commas, but it doesn't work if I only have a single string.

"^([a-zA-Z0-9]+,)+[a-zA-Z0-9]+$"

Works for something like "1A,1B,1C", doesn't work on "1A"

Sorry, I don't know much about regex and I only got this through searching.

Here are a few example of what can be valid or invalid

1 - Valid

12 - Valid

1A - Valid

A1 - Invalid

12A - Valid

A12 - Invalid

1AA - Invalid

A - Invalid

1,2,3,6A,6B,11,11A - Valid

Invalid would be if any other characters appear in the string except for numbers and letters also no commas or anything in the prefix and suffix


Answer:
^\d{1,2}[A-Z]?(?:,\d{1,2}[A-Z]?)*$

Try this.See demo.

https://regex101.com/r/hI0qP0/25


Related:


Match a pattern preceded by a specific pattern without using a lookbehind


regex,eclipse,lookahead
Is there a way to match a B only if preceded by an A? The A can be at any position behind the B, with any amount of characters between. Examples: A_B (Matches `B`) C_B (No match) I've tried: (?=A)[^B]*B But it matches all the characters preceeding B as well....

Retrieve full path of FTP file on drag & drop?


vb.net,ftp
I can read the filename using next code when dragging a file from an Ftp folder browsed on Windows explorer. But is there a way to retrieve the full Ftp path? Private Sub DataGridView1_DragDrop(sender As Object, e As System.Windows.Forms.DragEventArgs) Handles DataGridView1.DragDrop Dim filename As String = "" If e.Data.GetDataPresent("UniformResourceLocator") Then...

match line break except line begin with spcific word or blank line


regex,notepad++
If I have text that the line breaks is broken: Chapter 1 Lorem ipsum dolor sit amet, consectetur adipisci ng elit, sed do eiusmod tempor incididunt ut la bore et dolore magna aliqua. Ut enim ad minim ve niam, quis nostrud exercitation ullamco labo ris nisi ut aliquip ex ea...

How to write RegEx for inserting line break for line length more than 30 characters?


regex
I am using a text editor which lets use regular expression to find / replace text. I have a large text file. I want to insert new line in each lines which are more than 30 characters. I want the line to break after 30th character (doesnt matter if a...

Extracting strings from HTML with Python wont work with regex or BeautifulSoup


python,regex,parsing,beautifulsoup,python-requests
Im using Python 2.7, BeautifulSoup4, regex, and requests on windows 7. I've scraped some code from a website and I am having problems parsing and extracting the bits I want and storing them in a dictionary. What I'm after is text that is presented as follows in the code: @CAD_DTA\">I...

How to create the javascript regular expression for number with some special symbols


javascript,regex
what can be the java-script regular expression which gives the numbers with some symbols For example following condition must be pass. Number can start with $ Can have the . or , : symbols between and % sign at the send. Passing valus: $233 48.23% 278 22.33 45:23 10,000 Number...

Reg ex matching a word


regex
I need to match only first two files, out of four files listed below: ABD_DEF_GHIJ_20150611 ABD_DEF_GHIJ ABD_DEF_GHIJ_FX_20150611 ABD_DEF_GHIJ_FX I am using reg ex - ABD_DEF_GHIJ(_\d{8}|\b) and it's working fine. I would like to know if my solution is ok or there is any better alternate solution....

Get number from string


regex
I am trying to get the enclosed number between two slashes in a URL using regex. The code regex I have is not working, I am fairly new to regex and don't really understand it. The regex: http:\/\/?www\.?example\.com\/g\/(^\d$)\/\w The URL: http://www.example.com/g/1337/Game-Title Trying to get the "1337", which is the PlaceId....

Regex that allow void fractional part of number


c#,regex
@"[+-]?\d+(\.\d+)?" -this is a regex I have wrote for numbers it allows [+-] minus before the number digits before and digits after the point the question is how to change this to allow "not finished" values so that input of "5." - is fine too ?...

How to pass all value of ListBox Control to a function?


vb.net,listbox
I am writing a simple application to read the value a textbox and add to a listbox control . But i have to pass the listbox control to function . Any suggestion ? Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load test("E:\Satyajit.txt") End Sub Public Function...

PHP Regular Expressions Counting starting consonants in a string


php,regex
I need to find out how many starting consonants a word has. The number is used later in the program. The code below does work, I am wondering if it is possible to do this with a regular expression. $mystring ="SomeStringExample"; $mystring2 =("bcdfghjklmnpqrstvwxyzABCDFGHJKLMNPQRSTWVXYZ"); $var = strspn($mystring, $mystring2); Using a regular...

Get all prices with $ from string into an array in Javascript


javascript,regex,currency
var string = 'Our Prices are $355.00 and $550, down form $999.00'; How can I get those 3 prices into an array?...

Get XML node value when previous node value conditions are true (without looping)


xml,vb.net,linq-to-xml
Sample XML - <?xml version="1.0"?> <Root> <PhoneType dataType="string"> <Value>CELL</Value> </PhoneType> <PhonePrimaryYn dataType="string"> <Value>Y</Value> </PhonePrimaryYn> <PhoneNumber dataType="string"> <Value>555-555-5554</Value> </PhoneNumber> <PhonePrimaryYn dataType="string"> <Value>Y</Value> </PhonePrimaryYn> <PhoneType dataType="string"> <Value>HOME</Value> </PhoneType>...

Does there exist an algorithm for iterating through all strings that conform to a particular regex?


c#,regex,algorithm
I'm making a script to try and hack into an account whose login password is at least 8 characters long and includes at least 1 number, 1 special character and 1 capital letter. I will use brute force. Is there a compact, elegant and efficient way to iterate through every...

Convert date to string format


vb.net,converter
I have successfully imported data from xls into dataGridView. The date column in dataGridView is showing the DateTime format. I want this date column to be displayed in "dd MMM yyyy" format. I have tried as shown below: connExcel.Open() Dim dtExcelSchema As DataTable dtExcelSchema = connExcel.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, Nothing) Dim SheetName As...

Regex with whitespaces and preceding zeros


regex,sas
I want to match the string 11 with a regular Expression in SAS. The 11 can be preceded by zero or more 0 and/or by white spaces. Any other character is not allowed. Likewise, if anything there should only be white spaces following the 11. Examples: Match: 0000011 11 11<space><space>...

How to match words in 2 list against another string of words without sub-string matching in Python?


python,regex,string,loops,twitter
I have 2 lists with keywords in them: slangNames = [Vikes, Demmies, D, MS Contin] riskNames = [enough, pop, final, stress, trade] i also have a dictionary called overallDict, that contains tweets. The key value pairs are {ID: Tweet text) For eg: {1:"Vikes is not enough for me", 2:"Demmies is...

Regex to remove `.` from a sub-string enclosed in square brackets


c#,.net,regex,string,replace
I have this regex in C#: \[.+?\] This regex extracts the sub-strings enclosed between square brackets. But before doing that I want to remove . inside these sub-strings. For example, the string hello,[how are yo.u?]There are [300.2] billion stars in [Milkyw.?ay]. should become hello,[how are you?]There are [3002] billion stars...

Python match whole file name, not just extension


python,regex,nsregularexpression
Objective: Use Python regex to return a list of filenames have certain file extensions. List of files: X8SIA9.ROM X8SIA0.rom X8SIA0.928 Regex to find files that end in *.ROM or 3x numbers: bios_file = re.findall(r'.*\.(rom|[0-9]{3})+', name, re.I) Issue: bios_file is returning ['ROM'], ['rom'], [928]. bios_file should be returning the entire filename...

Regex pass dynamic values with boundry


c#,regex,string,boundary
I'm trying to pass a dynamic value at runtime with a boundary \b to a Regex function. My code is: static void Main(string[] args) { string sent = "Accelerometer, gyro, proximity, compass, barometer, gesture, heart rate"; string match = "gyro"; string bound = @"\b"; if (Regex.IsMatch(sent, @"\bgyro", RegexOptions.IgnoreCase)) { Console.WriteLine("match...

Java - Enforce TextField Format - UX - 00:00:00;00


java,regex,user-interface
Please see below image of the UI of my current application Currently, I am enforcing Data Format of the text fields in the back end. If the RegEx does match (00:00:00;00), it will throw an error. My question is from a UX perspective, is it possible to make the input...

regex - Match filename with or without extension


regex,logstash-grok
Need a regex pattern to match all of the following: hello hello. hello.cc I tried \b\w+\.?\w+?\b, but this doesn't match "hello." (the second string mentioned above)....

How do I isolate the text between 2 delimiters on the left and 7 delimiters on the right in Python?


python,regex,string,split
I have a string: string = ""7807161604","Sat Jan 16 00:00:57 +0000 2010","Global focus begins tonight. Pretty interested to hear more about it.","Madison Alabama","al","17428434","81","51","Sun Nov 16 21:46:24 +0000 2008","243" I only want the text: "Global focus begins tonight. Pretty interested to hear more about it."" which is between the 2nd and...

Swing regular expression for phone number validation


java,regex
I want to validate phone number field in swing, so I am writing code to allow user to enter only digits, comma, spaces. For this I am using regular expression, when user enter characters or other than the pattern text field will consume. My code is not working. Can anyone...

Convert Double from String


asp.net,vb.net,visual-studio-2012,converter
When converting string to floating, the converter creates wrong results. ?Global.System.Convert.ToDouble("635705821821928755").ToString("0") "635705821821929000" ?Global.System.Convert.ToSingle("635705821821928755").ToString("0") "635705800000000000" I am working with VB.Net Visual Studio 2012, Framework 4 on ASP.Net Webpage. Is there any solution for converting huge numbers from string into floating?...

Python regular expression, matching the last word


python,regex,list
I've the following problem. I'm looking to find all words in a string that typically looks like so HelloWorldToYou Notice, each word is capitalized as a start followed by the next word and so on. I'm looking to create a list of words from it. So the final expected output...

How to Match a string with the format: “20959WC-01” in php?


php,regex
i want to restrict a user to enter a value which is similar to the value "20959WC-01", means it must contains 5 integers followed by two character, a '-' and two integers, can anyone please give me a solution to sort out this problem. Thanks in advance :) ...

MySQL substring match using regular expression; substring contain 'man' not 'woman'


mysql,regex
I have an issue while I fetch data from database using regular expression. While I search for 'man' in tags it returns tags contains 'woman' too; because its substring. SELECT '#hellowomanclothing' REGEXP '^(.)*[^wo]man(.)*$'; # returns 0 correct, it contains 'woman' SELECT '#helloowmanclothing' REGEXP '^(.)*[^wo]man(.)*$'; # returns 0 incorrect, it can...

BeautifulSoup: Parsing bad Wordpress HTML


python,html,regex,wordpress,beautifulsoup
So I need to scrape some a site using Python but the problem is that the markup is random, unstructured, and proving hard to work with. For example <p style='font-size: 24px;'> <strong>Title A</strong> </p> <p> <strong> First Subtitle of Title A </strong> "Text for first subtitle" </p> Then it will...

jQuery / Regex: How to compare string against several substrings


jquery,regex,string,substring,substr
I have a special validation need where I need to check if a string contains ANY out of several substrings like the following list: 12 23 34 45 56 67 78 89 90 01 I am new to jQuery and the only thing I could think of here is the...

Validate part of mail suffix


c#,regex
I'm validating mail addresses that could look something like this: [email protected] but also [email protected] I would like to check whether if xx is present or not. The first thing that came to mind was String.Contains, but it would obviously match any occurrences of xx in the string. Is regexp the...

Visual Basic Datagrid View change row colour


vb.net,datagridview,datagrid
Every other change to the datagrid view works fine but for some reason the row color just wont change. Ive debugged and my application goes through the loop to change the row color. Also I have a button that gives the datagrid view a new list and colors the rows...

NullReference Error while assiging values of Modeltype in MVC View (Razor)


vb.net,razor,model-view-controller,model
I have the following MVC Model: Public Class Employee Public Property EmployeeID As Integer End Class Controller: Namespace Controllers Public Class EmployeeController Inherits Controller Function Details() As ActionResult Dim employee As Employee employee = New Employee employee.EmployeeID = 101 Return View() End Function End Class End Namespace View: @ModelType MVCDemo.Employee...

Regular Expression for whole world


regex,c#-4.0,vb6
First of all, I use C# 4.0 to parse the code of a VB6 application. I have some old VB6 code and about 500+ copies of it. And I use a regular expression to grab all kinds of global variables from the code. The code is described as "Yuck" and...

ZipEntry() and converting persian filenames


vb.net,persian,sharpziplib
In my vb.net project I'm trying to add a file with a Persian name to a zip file and I do this with the code bellow: Dim myentry As New ZipEntry(dr.Item("MyFile").ToString()) zipOut.PutNextEntry(myentry) however when I open the zip file I see the file name is changed to a gibberish Is...

Can't output Guid Hashcode


sql,vb.net,guid,hashcode
I'm trying to use the hashcode of a guid as a random voucher name for a website, and have been trying to write new records to a SQL table with the Hashcode variable but it doesn't work. command.Parameters.Add("@voucherName", SqlDbType.NVarChar) command.Parameters("@voucherName").Value = Guid.NewGuid().GetHashCode() When using that code it just puts a...

Finding embeded xpaths in a String


java,regex
I have a string where I have the user should be able to specify xpaths that will be evaluated at runtime. I was thinking about having a the following way to specify it. String = "Hi my name is (/message/user) how can i help you with (/message/message) "; How can...

Connecting to database using Windows Athentication


sql-server,vb.net,authentication,connection-string
I would like to use window authentication in my program to connect to my sql server. users already have certain permissions on the SQL server and I would like to leverage that in my program. The way I currently connect to the server is using this connection string. Dim ConnectionString...

Store regex pattern as a string in PHP when regex pattern contains both single and double quotes


php,regex
UPDATE: It turned out that what broke my reg expressions after escaping the quotes was the / deliminator terminating the expression early. I'm attempting to store a regex pattern as a string like so: $link_pattern = "/<a\s+href=(?:"([^"]+)"|'([^']+)').*?>(.*?)</a>/"; However I'm unable to properly encapsulate it since the regex pattern contains both...

How many characters are visible like a space, but are not space characters?


php,regex
If I want to discover the hexadecimal equivalent of a space in PHP I can play with bin2hex: php > echo var_dump(bin2hex(" ")); string(2) "20" I can also obtain space character from "20" php > echo var_dump(hex2bin("20")); string(1) " " But there exist Unicode versions of a "visible" space: php...

Identify that a string could be a datetime object


python,regex,algorithm,python-2.7,datetime
If I knew the format in which a string represents date-time information, then I can easily use datetime.datetime.strptime(s, fmt). However, without knowing the format of the string beforehand, would it be possible to determine whether a given string contains something that could be parsed as a datetime object with the...

Gridview items not populating correctly


asp.net,vb.net
I have data I am trying to input into a gridview. I am looking up the number of rows for the gridview and adding data into them like this: My "test" however does not get populated into the Submitted and Variance BoundFields in the Gridview. All that populates is the...

Warning: preg_match_all(): Unknown modifier '\' [duplicate]


php,regex,warnings
This question already has an answer here: PHP - preg_match and “Unknown modifier” error 3 answers I know there are tons of duplicate question like this. But I am stuck here. Can anyone help me out? Here's the code: <?php function count_images($string){ preg_match_all('/[^/\s]+/\S+\.(jpg|png|gif)/', $string, $results); return count($results[1]); } ?>...

REGEX python find previous string


python,regex,string
I'm trying to find if the last word of the string is followed by a space or a special char, and if yes return the string without this space/special char For example : "do you love dogs ?" ==> return "do you love dogs" "i love my dog " (space...

Comparing arrays with numbers in vb.net


arrays,vb.net
I need a way to compare two arrays in vb.net and save result in third array: Dim KonRes(3) As Integer Dim UserRes(3) As Integer Dim YelRed(3) As Integer KonRes(0) = 1 KonRes(1) = 2 KonRes(2) = 3 KonRes(3) = 4 UserRes(0) = 4 UserRes(1) = 3 UserRes(2) = 2 UserRes(3)...

Please can someone help me understand the exec method for regular expressions?


javascript,regex
The best place I have found for the exec method is Eloquent Javascript Chapter 9: "Regular expressions also have an exec (execute) method that will return null if no match was found and return an object with information about the match otherwise. An object returned from exec has an index...

Custom drawing using System.Windows.Forms.BorderStyle?


c#,.net,vb.net,winforms,custom-controls
I want to mimick drawing of default border based on value of property BorderStyle. Instead of single border around the control, my control is visualised as four adjacent custom-drawn boxes (2×2), each having standard border drawn individually. So for example, if Control.Border is set to FixedSingle value I want to...

Removing Alert When Using DeleteFile API


vb.net,vba,api,delete
I'm writing a VBA application which involves looping a large number of directories recursively. I am using the FindFirstFile API to to achieve this, as it offers a substantial performance boost over the FileSystemObject. In order to remove the FSO from my code entirely, I need a routine to delete...

Regex not working in HTML5 pattern


regex,html5
So I have this regex intended to let pass all text but those that contain as initial chars the "34" sequence: ^(?!34)(?=([\w]+)) The regex is working fine for me in https://regex101.com/r/iN1yN3/2 , check the tests to see the intended behavior. Any Idea why it isn't working in my form? <form>...

javascript replace dot (not period) character


javascript,regex,replace
I have some text being rendered that has an inline list with the bullet points notated by the "•" character, all on one line of text. It's ugly, but I don't want to change the source data. So I thought I'd just do a quick javascript replace to insert breaks...