Use RegEx to Find and Replace Specific HTML Tags

Question

I have a string that contains dynamic HTML content.

I want to be able to find and replace all occurrances of specific HTML tags and replace them, but not the content within them.

The specific HTML tags would be for a table - i.e. TABLE, TR, and TD. The tags may contain attributes, or they may not. How would one go about doing this in C#?

Thanks in advance for any help!

Answer 1

Don't use Regexs. Use the Html Agility Pack.

See this question for why not.

Answer 2

  e = "(< *?/*)div( +?|>)";
  repl = "\\1boo\\2"; 

Frankly I am befuddled by this mantra being imposed on everyone to never use regex for html.

Answer 3

This function might be sufficient:

public static string ReplaceTag(string input, string soughtTag, string replacementTag)
{
    return Regex.Replace(input, "(</?)" + soughtTag + @"((?:\s+.*?)?>)", "$1" + replacementTag + "$2");
}