Web Forms :: Regex.Replace / Capture The Text That Was Removed?

Feb 8, 2010

The regular expression removes the html, I then need to assign it to a button,

How do I capture the text that was removed?


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How To Use Regex Replace To Conditionally Remove Blocks Of Text

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I would like to conditionally remove a block of text between specifed start and stop delimiters. The code below does not work, but hopefully it suggests enough of what I am trying to accomplish.


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Web Forms :: Regex.Replace - How To Replace All In A String

Jun 18, 2010

I need to replace <span> entries in a string to legacy html code because it's going to be used in a report for Crystal Reports. <b> works with Crystal, but the<span>'s do not.

Here's the string which I'm trying to replace: <span style="font-weight: bold">%THIS CAN BE ANY TEXT%</span>. I want to replace it to



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Jun 16, 2010

I am getting taggings like the following in a string

<color> vocation </color>
<color> elation </color>
<color> sage </color>

you can notice that each tagging differs only in the wordings


But i want to write a code some thing like this

Regex.Replace(userAx, "<color> vocation </color>",
"<color> </color>"

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writing the regex pattern for the below case ? I do not want to use string.replace so using Regex.Replace


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I have a textbox where I accept multiple email ids separated by a comma. I then split it in my code-behind. If an email id is invalid, I change the background of it using Regex.replace, like this:

Regex.Replace(InputTxt, Search_Str, StartTag & "$1" & EndTag, RegexOptions.IgnoreCase)

My start and end tags are definned as:

"<Span class=highlight>" and "</span>"and my CSS is defined

as:.highlight { text-decoration: none; color:black; background:yellow;}This doesn't work.

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I'm trying to replace some code generated by the AJAX Control Toolkit HTMLEditor from the XHTML standard to legacy code; <span style=*> to <b>, <u>, <i>, etc. This needs to be done because Crystal Reports doesn't understand the <span style=*> and needs the legacy items.

This is the code being generated by the HTMLEditor:


Is Regex.Replace the best way to replace these items? I need to keep the text between the opening and closing statements as well as ensure the proper formatting to the text so doing just ReplacementText.Replace will not work. I've tried a number of different things to try and get Regex.Replace working properly but keep having different issues and different things happen. But why it's not using the the closing span for the bold statement but using the closing span for the italics is beyond me.

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I need a regex or any other solution to replace an id in the middle of a url (not in querystring).
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new { controller = "Search", action = "SearchResults", categoryID = "", categoryName = "" }

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I try to replace [h2] to <h2> I use this coding:

string o = "<h2>test</h2>";
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So that is not what i want.

After the first 1, he should make:


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with a regex that would replace the following. The only thing that would remain the same is the div tags, the id's and classes could change and so could the content.

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C# - Regex Replace - But With A Few Exceptions?

Mar 11, 2010

string lNewHTML = Regex.Replace(lOldHTML, "(word1|word2|word3)", "<a href="page.aspx#$1">$1</a>", RegexOptions.IgnoreCase);

The code works, but I need to include some exceptions to the replace - e.g. I will not replace anything i an img-, li- and a-tag (including link-text and attributes like href and title) but still allow replacements in p-, td- and div-tags.

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Using RegEx Replace Function In C# ASP?

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How do I solve the problem below? I'm creating a simple content management system, where there is a HTML template with specific markup that denotes where content should be:

<html><head></head><body><!-- #Editable "Body1" --><p>etc etc</p><!-- #Editable "Extra" --></body></html>

Separate from this, there is content in a database field that looks a little like this:

<!-- #BeginEditable "Body1" -->This is Test Text<!-- #EndEditable --><!-- #BeginEditable "Extra" -->This is more test text<!-- #EndEditable -->

As you can guess I need to merge the two, that is, replacing

<!-- #Editable "Body1" -->

with: This is Test Text. I've begun the code here. But I'm having problems using the Regex Replace function that should be located at the very bottom of that For/Each.

//Html Template
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string regions = "<!-- #BeginEditable "Body1" -->This is Test Text<!-- #EndEditable --><!-- #BeginEditable "Extra" -->This is more test #EndEditable -->";
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Regex oRegex = new Regex("<body.*?>(.*?)</body>", RegexOptions.Multiline);
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Regex oRegex1 = new Regex("<!-- #Editable "(.*?)"[^>]*>",RegexOptions.Multiline);
MatchCollection matches = oRegex1.Matches(body);
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foreach (Match match in matches)
string title = oRegex1.Match(match.ToString()).Groups[1].ToString();
Regex oRegex2 = new Regex("<!-- #BeginEditable "" + title + ""[^>]*>(.*?)<!-- #EndEditable [^>]*>", RegexOptions.Multiline);
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I am working on ASP.NET (C#) application. I want to change number decimal figure with comma(,) where i have dot(.) using regular expression.

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How can I replace Html inside pre tag? I would prefer to do that with Regex


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Images In Blog Using Regex And Replace?

Dec 12, 2010

I want to change the way my blogs are displayed on my website. I currently use a seperate table in SQL to hold them and do a loop and replace.

All I really need to do is have a code that can be translated into real HTML in the blog code. I need to know the image name and the css class.

I was thinking is it possible to have somthing like this in a blog stored in the DB

<img L 1234.jpg> and use regex to match it and change it ton<img src="1234.jpg class="imgleft">

I know it looks like well why not just use the long code and not use regex, but I have a method that gets in the image path from the image name with padding. So in this case the image path would be 000/000/001/234/1234.jpg

I would have more then one occurance in the original string so would need to either somehow replace them all at once or use the regex to loop through untle they have all be matched

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.net Regex To Find Anchor Tags And Replace Their Url?

May 13, 2010

i'm trying to find all the anchor tags and appending the href value with a variable.
for example

<a href="/page.aspx">link</a> will become <a href="/page.aspx?id=2">
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In my table below string are present which I have to replace *@*$*86$*$ with blank, how can I do? Here bold can be 0-99, in any row.

xOsyH *@*$*86$*$

M. V. *@*$*81$*$ .

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Web Forms :: Html Tags To Be Removed From Output Text

Oct 19, 2010

I have some code written in c# to obtain the text and numbers from a web interface that required user inputs. my problem is that the texts i am getting off the web is displays in html forms (i.e. it has tags all over the place) hence, i would like to filter out the html tags, is that possible? i searched up some codes but it didn't help me as it brought up even more problems when compile.

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Web Forms :: How To Search And Replace Text In Rich Text Format Document

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How to use pattern replacement in the RTF?. For example you can add a placeholder like {USER_FIRST_NAME} in the RTF document. When the user clicks the download button, your application can take the information from the database and replace every instance of {USER_FIRST_NAME} with the data from the database....

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Namespace Removed In Web.config Not Removed In A Page With Master?

Sep 12, 2010

I have defined this in the web.config of a subdirectory

<remove namespace="App"/>
<add namespace="Tom"/>

App is imported in the parent web.config file, Tom and App have classes with the same names.To avoid errors resulting from ambiguous class names I removed the App namespace from the sub-directory where the Tom namespace is used.

However the namespace App is still imported on content pages that have a master page outside the Tom directory. This causes the aforementioned errors.Here is my dir structure

-Root Directory
--web.config (App is added in web.config)
--Tom Sub-diretory
---web.config (App is removed in web.config)
---Content page that uses Default.master (Here is the problem)
---Page without master (Works OK)

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Regex Validation On A Text Box Locks-up Text Box On Postback?

Nov 10, 2010

I have a web application (done in ASP/C#) that has regex validation on a text box. Initially the regex works perfectly fine. But then I also provide a button click event (clear) that allows the user the clear text box and change their input for a new query. At this point (page post back) the regex takes control and maintains control of the text box so a new query can't be run. Can anyone tell me what to do so that the regex doesn't fire on page postback and allows new input for validation?

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Web Forms :: Parsing Textbox.Text With Regex Query?

Aug 22, 2010

I have the a text box into which I paste the following text:

England has 80 skyscrapers, 2405 houses, 0 spaceships

I want to parse the contents of this textbox and extract the integers to variables eg:


I tried the following regex but It doesn't work:

Dim skyscraper As
Regex("/([0-9,]+) skyscrapers/")

Any pointers as to what I should be doing?

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Web Forms :: Using Regex To Extract The Anchor Text Out Of A Link

Jun 28, 2010

I have a document with many links with inner images such as

<a href="blablabla" bla="bla"><img src="" /></a>

i want to user regex to find only the INNER HTML of the link (in this case, <img src="" />)

I want to transform a whole document by this filter

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Web Forms :: Find A Substring (email) In A Large Text Using Regex?

Sep 22, 2010

I want to find a substring (email) in a large text using Regex.

just want to return the first valid email that is found from the input text:


string inputString = "Our email is myname@ourcompany.com.

desired output: myname@ourcompany.com

this is the Regex pattern i've used: ^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$

- is this pattern correct?


private static void DumpHRefs(string inputString)
Match m;
string HRefPattern = @"^[A-Z0-9._%+-]+@[A-Z0-9.-]+.[A-Z]{2,4}$";
m = Regex.Match(inputString, HRefPattern,
RegexOptions.IgnoreCase | RegexOptions.Compiled);
while (m.Success)
Console.WriteLine("Found email " + m.Groups[1] + " at ".......

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