Lets say I have a multiline textbox that I would like to have checked for say, 1-2 digits over a max of 5 lines. I found a regular expression pattern answered on another similar question on here but it was not working for me even after modifying it a number of times.
I'm currently using the following without success.
Dim textCheck As New Regex("(^d{1,2}$
?
?){0,5}", RegexOptions.Multiline)
regex - regular expression to check input on multiline textbox
View 5 RepliesI'm currently coding a ASP.NET web application using VB.NET. I'd like to know how to limit the input of the regular expression validator to numbers only (with specific number of digits e.g 7-20 digits).
View 3 RepliesI understand the concept of regular expressions but I am looking for a regular expression string that checks the input string for the following criteria only...
1.) Upper and lower case letters
2.) The space character
3.) Apostrophe
4.) Comma
5.) Period
6.) Hyphen
[Code]....
Website from download and fetch data, but i get empty value. I don't know how to make it find with multiline between " - ", but they're on different rows. (")
I am in a need of a Regular Expression to restrict input to only certain characters in a text box. The text box can only allow 0 or 1 "+" sign at the beginning and at no other position. The text box can only allow 0 or 1 ":" sign not before the "+" sign. The text box can allow any number of 0-9 digits.
[Code]...
See subject of positing for question.
1) I recall seeing a really cool option in VB.NET using LINQ to match using "LIKE%'
2) I know regular expressions will work and I suspect that will result in the shortest code and probably won't be too hard to read for such a simple test.
Here's what I did.
Private Shared Function FileNameIsOk(ByVal fileName As String) As Boolean
For Position As Integer = 0 To fileName.Length - 1
Dim Character As String = fileName.Substring(Position, 1).ToUpper
Dim AsciiCharacter As Integer = Asc(Character)
Select Case True
[Code] .....
Does anyone have a regurlar expression available which only accepts dates in the format dd/mm/yy but also has strict checking to make sure that the date is valid, including leap year support?
I am coding in vb.net and am struggling to work this one out.
I am trying to use a regular expression to find a certain string within a textbox.
Is it possible to include the equals sign (=) within the regex so it looks for this? When i type the equals sign within the regex it doesn't fnid it any more.
Works when searching this string - "and JobID 816138</Detail>":
[Code]....
I use this code. USED CODE
[Code]...
I'm trying to count characters in a textbox, which includes newline characters and tabs. How do we know if the textbox contains only newline characters? ie or if the user types in one or more characters, then a bunch of "newline" characters (CR followed by LF) and then goes back and deletes the original one or more characters leaving only the leading "newline" characters. I don't want to count the characters in textbox only if new line exists..
If String.IsNullOrEmpty(TextBox1.Text) Then
Label5.Text = 0
Else
[CODE]...
I am using vb.net. I am having below code in vb.net
[Code]...
Now I want an set validation for mandatoryto the textbox TokenStartingNumberTextBox only If the user had entered the value in DateOfReceivingTextBox.
I am trying to figure out how to read a text file and check the value entered into a textbox to see if it already exists. Its basically a validation list.
I found some code on how to read a text file, but I do not know what to do with the information.
Sub Main()
If RadioButton1.Focus = True Then
'Check TextBox1 value against list of known part numbers
[Code]...
How do I compare the textbox value to a line read from the file and stop if there is a match?
Regular Expression to count per words and characters in VB.Net. Here's my codes.
[Code]...
I'm trying to create a regex which will match either one of the following [code] This regex is supposed to return all and any form of the function that is used.If match string were - FVAL(A,"B")+5 then match group should be FVAL(A,"B")
View 1 RepliesI have the following regular expression for validating a file name:
^(([a-zA-Z]:|))?(((.)|(..)|(. %5D">^/:*?"|<>. |([^/:*?"|<>][^/:*?"|<>. ]))?))). %5D">^/:*?"|<>. |([^/:*?"|<>]*[^/:*?"|<>. ]))?$
I can get it to work in VB.NET but not C#. I can't figure out why it works in one but not the other.
[Code]...
As far as I can tell the patterns are identical in both languages with escaping. When I run the VB code I get a match. When I run the C# code I get nothing.
I have just coded the below regular expression. I have a mini rich text editor on a web page (very similar to the one I am using to post this question) and I want to make use of a double asterisk to indicate which words/phrases should be wrapped in a strong tag. The aim is to allow the user to add pre-defined HTML elements without actually having to submit HTML.
[code...]
Maybe I am over-optimising this, but I want to know if this can be made more efficient?
It is a little like a search and replace, I want to replace any string that contains any substring in parentheses with the same string but the words in parentheses colored RED: Eg
Take this text in TextBox1:
"The Prime Minister (that idiot from Scotland) made a speech today"
and convert to this text in RichTextBox1:
"The Prime Minister (that idiot from Scotland) made a speech today"
I had a regular expression which parses out value.
[Code]...
I am trying to use regular expression for extracting data from web page. but everytime i change the URL i need to change my regular expression for URL.
View 3 RepliesI have the following function that I am using to remove the characters �4 and nulls from my xmlString but I can't find what do I need to change to avoid removing the from my ending tags. This is what I get when I run this function
<ARR>20080625<ARR><DEP>20110606<DEP><PCIID>626783<PCIID><NOPAX>1<NOPAX><TG><TG><HASPREV>FALSE<HASPREV><HASSUCC>FALSE<HASSUCC>
find out what do I need to change in my expression to keep the ending tag as </tag>
[Code]...
I have a textbox which takes as input the email address. Do you have regular expression validator in vb.net so that I can check if '@' is present or not in the string
View 2 RepliesI have a string (can be anything) and somewhere in the middle of the string there's a filename with the extension 'txt'. The filename can basically be anything, and any filename is correct, but with a certain exception.
If the filename ends with .part<number>.txt, the <number> can only be one of the following, 1, 01, 001, 0001.
Every other <number> is incorrect.
Match
.part1.txt
.Part001.txt
[Code].....
I want to extract a URL value from an INI File as such:
[DEFAULT]
BASEURL=http://www.stackoverflow.com/
[InternetShortcut]
URL=http://www.stackoverflow.com/
So I can get the URL value as the only Match from the Regular expression - but I don't understand enough about them (yet) to do this. I have seen RegEx examples that will parse any INI file and get the Name, Value Pairs I just want to get the URL value only from a file no matter what else it contains. My aim is to have something like this:
Dim _pattern As New Text.RegularExpressions.Regex("RegEx")
Dim _url As String = _pattern.Match(iniContentString).Value
It seems simple but I cannot seem to create a specific case RegEx where I want everything from "URL=" to the vbCrLf at the End to be my "Match". I have refered to Regular-Expressions.info which has been a help before but still cannot get this simple example to work.
have a regular expression in .NET, which will allow only 24 hr time format in the textbox.
View 6 RepliesI'm attempting to build a function that will return a regex that is dynamically created.The regex to create will be a range check between two numbers. So far I've got something similar to this (not finished as yet).Is this approach valid, or is there an easier way that I'm overlooking?
Public Shared Function Range(ByVal Minimum As Integer, ByVal Maximum As Integer) As String
Return "^([" & Minimum.ToString.PadLeft(2, "0") & "]" & Microsoft.VisualBasic.StrDup(Minimum.ToString.Length, "[0-9]") & "|2[0-4][0-9]|25[0-5])$"
[code]......
I am trying to validate a csv file of domain names (eg. @google.com, @xyz.co.uk, @xyz.edu etc.) I am using the following Regular Expression:
Regex(@"@(?:[a-zA-Z0-9-]+.)+[a-zA-Z]{2,4}$", RegexOptions.Compiled);
Is there scope for improvement on the above?
Regex(@"@(?:[a-zA-Z0-9-]+.)+[a-zA-Z]{2,4}$", RegexOptions.Compiled);
Using the above, I want to pass only values like @gmail.com, @xyz.edu, @co.uk etc...
But I find that the values like abc@gmail.com (valid email ids) also pass through.
I am using the below Regular Expression which works fine in case of date validation. But if I select the date from the DatePicket even then it throws alert:Enter valid date. How can I modify the regular expression so as to be compatible with DatePicker.
Set RegularExpressionObject = New RegExp
With RegularExpressionObject
.Pattern = "^(((0?[1-9]|[12]d|3[01]).-/.-/?d{2}))|((0?[1-9]|[12]d|30).-/.-/?d{2}))|((0?[1-9]|1d|2[0-8])[.-/]0?2.-/?d{2}))|(29[.-/]0?2.-/?(0[48]|[2468][048]|[13579][26])|((16|[2468][048]|[3579][26])00)|00)))$"
.IgnoreCase = True
.Global = True
End With
[Code] .....
get generic regular expression for my html file ....????? My html is....
[Code]...