using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?:(?<!\/\/|\/\*|<!--).)* #check if commented out
<[a-z][a-z0-9]*?\b #find start of a tag
(?:.(?![^?]>))+ #Must not find > between start and class unless ?>
class=([""']) #Find class and opening quotes
(?:(?!\1).)* \bmatch\b (?:(?!\1).)* #see if our tag is in between the quotes
\1 #closing quotes
.*(?<!\?)> #find first > without ? in front of it";
string input = @"<h1 class=""match"">Match list</h1>
<p class=""match"">Simple class element.</p>
<p></p> <h6 class='more match classes'> more classes different comma</h6>
<fdf <?php echo 'data=""extra data test to disturb the page.""'; ?> class='incluEdit match classes' > dffd
<div class='hoppa match more classes' <?=$zooi ?> > nested elements </div></div>
// <h1 class='match more classes'> no Match list</h1>
/* <h1 class='match more classes'> no Match list</h1>
<!-- <h1 class='match more classes'> no Match list</h1>
<p class='nomatch more classes'>shouldn't match</p>";
RegexOptions options = RegexOptions.Multiline | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx