How To Use RegEx Expression With InSTR
Jan 13, 2011
I'm looking to do is scrub an html file for anything that resembles an IP address or any set of numbers for that matter. Normally what I would do is just using things like string.split to split out the html around areas that I want to search. What I am looking to do is be able to essentially search a large amount of characters for anything that matches this reg ex pattern.
Dim pattern As String = "^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5]):(d{1,4}|[0-5]dddd|[0-5]dddd|6[0-4]ddd|65[0-4]dd|655[0-2]d|6553[0-5])$"
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Oct 24, 2010
'InStr' is a namespace and cannot be used as an expression.Dim FirstString As String = "me@me.com"
Dim SecondString As String = "@"Dim position As Integer position = InStr(FirstString, SecondString)
If position = 0 Then MsgBox("Not a Valid email address: There was No @ Sign") End If
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Apr 8, 2011
i have a string similar to this one:
Hi, <<
ame>> <<surname>>, this is an example << est>>.
I what a regex that match and split this string in:
"Hi, "
<<
ame>>
" "
[code]....
I tried this one: (<<*.*?>>)|(>>*.*?<<), but doesn't work.
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Sep 1, 2009
somebody put a regex expression that will:find a chunk that starts with [% and ends with %] within that chunk replace all xml special characters with:& quot; & apos; & lt; & gt; & amp;leave everything between <%= %> or <%# %> as is except make sure that there is space after <%# or <%= and before %> for example <%=Integer.MaxValue%> should become <%= Integer.MaxValue %>
source:[% 'test' <mtd:ddl id="asdf" runat="server"/> & <%= Integer.MaxValue% > %]
result:'test' <mtd:ddl id="asdf" runat="server"/> & <%= Integer.MaxValue %>
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May 14, 2011
I made an IP Logging application for my friends web site, and he wanted a program to grab the IPs instead of displaying every bit of information in .net, but still have the entire log intact[code]...
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Oct 19, 2010
I am trying to get all the text between the following tags and it is just not workind
[code]...
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Sep 14, 2010
My coworker needs me to write him a regular expression for his vb.net app.I do not know vb and he does not know regex.The regex he needs is:/.*web id: ?(d+).*/iBasically he needs to search a string for something like "web id: 345" or "web id:2534" and retrieve the ID.He took what I gave him above and was able to put this together:
Dim strPattern As String = ".*web id: ?(d+).*"
Dim strReplacement$ = "$1"
GetWebId$ = Regex.Replace(LCase$(strNote$), strPattern$, strReplacement$)
[code].....
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Jan 12, 2010
I have a vb.net class that cleans some html before emailing the results.
Here is a sample of some html I need to remove:
<div class="RemoveThis">
Blah blah blah<br />
Blah blah blah<br />
[Code]...
I am already using RegEx to do most of my work now. What would the RegEx expression look like to replace the block above with nothing?
I tried the following, but something is wrong:
'html has all of my text
html = Regex.Replace(html, "<div.*?class=""RemoveThis"">.*?</div>", "", RegexOptions.IgnoreCase)
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Nov 14, 2011
I am trying to build an application which does the following :
1) write some text in a richtextbox
2) when user clicks a button, the app will replace the text with another text in {} braces.
what I want is that the next time, the regex searches for any text it should exclude those which are present in {}. for eg : my world is good world and a happy world and will be a better world for everyone. first pass - change word "world"
[Code]....
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Sep 23, 2009
I want regular expression validator for my telephone field in VB.net. Telephone format should be (+)xx-(0)xxxx-xxxxxx ext xxxx (Optional) example my number would appear as 44-7966-591739 Screen would be formatted to show +44-(0)7966-591739 ext?
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Jan 31, 2011
I'm trying to type a regular expression that follows the following format: [URL] There are no special characters or numbers permitted for this criteria. I thought I had it down, but I'm a bit rusty with regular expressions and when I tested mine, it failed all across the boards. So far, my regular is expression is:
[Code]...
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May 21, 2009
ok, For the moment I have a string() where each element is in the structure of
[Code]...
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Feb 7, 2011
I'm trying to find the right RegEx to capture some (potentially) repeating data. I don't know how many times it will repeat. If I give an exanple of the data and what I want to capture can anyone point me in the right direction? It's the .Net regex engine (Visual Basic)
[Code]...
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Oct 14, 2010
Excel returns a reference of the form
=Sheet1!R14C1R22C71junk
("junk" won't normally be there, but I want to be sure that there's no extraneous text.)I would like to 'split' this into a VB array, where
a(0)="Sheet1"
a(1)="14"
a(2)="1"
[code]....
I'm sure it can be done easily with a regular expression, but I just can't get the hang of it.
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Jan 21, 2011
I need a regular expression that requires at least ONE digits and SIX maximum. I've worked out this, but neither of them seems to work. ^[0-9][0-9]?[0-9]?[0-9]?[0-9]?[0-9]?$ ^[0-999999]$
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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 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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Mar 15, 2011
regex - regular expression to check input on multiline textbox
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Apr 1, 2010
This is a related to a previous question I have asked here, see the link below for a brief description as to why I am trying to do this.Regular expression from font to span (size and colour) and back (VB.NET).Basically I need a regex replace function (or if this can be done in pure VB then that's fine) to convert all ul tags in a string to textindent tags, with a different attribute value for the first textindent tag.For example:
<ul>
<li>This is some text</li>
<li>This is some more text</li>[code].....
Basically I want the first ul tag to have no indenting, but all nested ul tags to have an indent of 20.
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Jun 18, 2009
I have written code to pull some data into a data table and do some data re-formatting. I need some help splitting some text into appropriate columns.
CASE 1
I have data formated like this that I need to split into 2 columns.
[Code]...
column is the first 11 characters That is easy.column 2 should contain all the text after the first 11 characters up to but not including the first number.The last column is all the text after column 2
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Mar 24, 2012
I know it may be quite easily for you. i have a text which contains 40 lines, I want to remove lines which starts with a constant text. check below data.
When I used (?mn)[+CMGL:].*($) it removes the whole text , when I use (?mn)[+CMGL:].*(
) , it only leaves the first line.
+CMGL: 0,1,,159
07910201956905F0440B910201532762F20008709021225282808
+CMGL: 1,1,,159
[Code]...
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Aug 22, 2011
I'm using Visual Basic 2010 Express to edit an XML file. I want to replace items that have (typically) non-zero floating point numbers with a single zero.
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Mar 4, 2010
I am pretty good with perl regular expressions but evidently I am at a loss on why this doesn't work.The code below stores "Person Test" in output variable.
im output As String
Dim userName As String = "Test, Person"
Dim re As New Regex("(w+),s(w+)", RegexOptions.Singleline)
output = re.Replace(userName, "$2 $1")
So why doesn't the following code store "#Test##Person#" in output variable.
Dim output As String
Dim userName As String = "Test, Person"
Dim re As New Regex("(w+),s(w+)")
For Each Match As Match In re.Matches(userName)
output &= "#" & Match.ToString & "#"
Next
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Jul 20, 2009
I'm trying to replace all the carriage return characters in a string obtained from a multi line text box in a Windows Form with the string ", <BR>" so that when I use the string in some HTML it displays correctly.
Function Blah(ByVal strInput As String) As String
Dim rexCR As Object
rexCR = CreateObject("VBScript.RegExp")
[code]....
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Aug 27, 2009
I am trying to separate numbers from a string which includes %,/,etc for eg (%2459348?:, or :2434545/%). How can I separate it, in VB.net
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Oct 14, 2010
I have a large ASP.NET project where I want to do a mass search and replace (about 3500 instances)
I want to change
If strErrorMessage.Length > 0
If strSomeString.Length > 0
If strWhatever.Length > 0
and any other similar call to the Length method from a string to the following
If Len(strErrorMessage) > 0
If Len(strSomeString) > 0
If Len(strWhatever) > 0
Anyway to reliably do this in one shot?
I can do a search and replace for something like If *.Length > 0 --> If Len(*) > 0
This just won't work though as it won't understand how to rearrange it properly. Currently have VS2010 and N++ at my disposal.
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Feb 7, 2012
I'm trying to parse csv file with VB.NET.csv files contains value like 0,"1,2,3",4 which splits in 5 instead of 3. There are many examples with other languages in Stockoverflow but I can't implement it in VB.NET.Here is my code so far but it doesn't work...
Dim t As String() = Regex.Split(str(i), ",(?=([^""]*""[^""]*"")*[^""]*$)")
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Jul 15, 2010
A client for our company contains an apostrophe in their email name joe's@joe.com. I was advised that this is the correct and current email for the given client. Below is the Expression string I am using with Regex (which I copied from the internet somewhere) to validate email addresses. How can this expression be modified to allow/accept apostrohe's?
strRegex =
"^([a-zA-Z0-9_-.]+)@(([[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.)|(([a-zA-Z0-9-]+.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(]?)$"
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Oct 23, 2009
i have a string that looks like this "Patient Name, Doc Name, Patient ID, something else"i want to extract each one of these and put it in a variable. such that var1 will equal "Patient Name" var2 will equal "Doc name" etc.. using instr and mid. what is the best way to do it?
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Jul 29, 2009
I have the following condition
If InStr("a,b,c", stringA) > 0 OrElse (InStr("y,z", stringB) > 0 AndAlso value = 0) Then
endif
COndition 1 is false so i check for condition 2 that is "(InStr("y,z", stringB) > 0 AndAlso value = 0) "
What puzzles me is that when stringB is nothing it still falls into the if condition and executes the code.
On first look it would seem that when stringB is nothing condition2 would fail and as a result would not fall into the if condition.
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