using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(<(?:(?:(?:(script|style|object|embed|applet|noframes|noscript|noembed)(?:\s+(?=((?:""[\S\s]*?""|'[\S\s]*?'|(?:(?!\/>)[^>])?)+))\3)?\s*>)[\S\s]*?<\/\2\s*(?=>))|(?:\/?[\w:]+\s*\/?)|(?:[\w:]+\s+(?:""[\S\s]*?""|'[\S\s]*?'|[^>]?)+\s*\/?)|\?[\S\s]*?\?|(?:!(?:(?:DOCTYPE[\S\s]*?)|(?:\[CDATA\[[\S\s]*?\]\])|(?:--[\S\s]*?--)|(?:ATTLIST[\S\s]*?)|(?:ENTITY[\S\s]*?)|(?:ELEMENT[\S\s]*?))))>)|([^<>]*?)(querry)";
string input = @"<body class=""mediawiki querry ltr sitedir-ltr ns-0 ns-subject page-International_English_Language_Testing_System skin-vector action-view vector-animateLayout"">
<div id=""mw-page-base"" class=""noprint""></div>
<div id=""mw-head-base"" class=""noprint""></div>
<div id=""content"" class=""mw-body"" role=""main"">
<a id=""top""></a>
and also a normal querry
<div id=""siteNotice""><!-- CentralNotice --></div>
<h1 id=""firstHeading"" class=""firstHeading"" lang=""en""><span dir=""auto"">International English Language Testing System</span></h1>
<div id=""bodyContent"" class=""mw-body-content"">
<div id=""siteSub"">From Wikipedia, the free encyclopedia</div>
<div id=""contentSub""> (Redirected from <a href=""/w/index.php?title=IELTS&redirect=no"" title=""IELTS"">IELTS</a>)</div>
<div id=""jump-to-nav"" class=""mw-jump"">
Jump to: <a href=""#mw-navigation"">navigation</a>, <a href=""#p-search"">search</a>
</div>
<div id=""mw-content-text"" lang=""en"" dir=""ltr"" class=""mw-content-ltr""><table class=""infobox vevent"" cellspacing=""3"" style=""border-spacing:3px;width:22em;"">
<caption class=""summary"">International English Language Testing System</caption>
<tr>
<td colspan=""2"" style=""text-align:center;""><a href=""/wiki/File:IELTS_logo.svg"" class=""image""><img alt=""IELTS logo.svg"" src=""//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/IELTS_logo.svg/300px-IELTS_logo.svg.png"" width=""300"" height=""113"" srcset=""//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/IELTS_logo.svg/450px-IELTS_logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7f/IELTS_logo.svg/600px-IELTS_logo.svg.png 2x"" data-file-width=""778"" data-file-height=""293"" /></a></td>
</tr>
<tr>
<th scope=""row"" style=""text-align:left;"">Acronym</th>
<td>IELTS</td>
</tr>
<tr>
<th scope=""row"" style=""text-align:left;"">Type</th>
<td>Standardized test. Available in 2 versions: ""Academic"" and ""General training"".</td>
</tr>
<tr>
<th scope=""row"" style=""text-align:left;"">Developer / administrator</th>
<td><a href=""/wiki/Cambridge_English_Language_Assessment"" title=""Cambridge English Language Assessment"">Cambridge English Language Assessment</a>, <a href=""/wiki/British_Council"" title=""British Council"">British Council</a>, <a href=""/wiki/IDP_Education"" title=""IDP Education"">IDP Education</a>.</td>
</tr>
<tr>
<th scope=""row"" style=""text-align:left;"">Knowledge/skill(s) tested</th>
<td>Listening, reading, writing and speaking of the <a href=""/wiki/English_language"" title=""English language"">English language</a>.</td>
</tr>
<tr>
<th scope=""row"" style=""text-align:left;"">Purpose</th>
<td>To assess the English language proficiency of non-native English speakers.</td>
</tr>
";
RegexOptions options = RegexOptions.Multiline;
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