using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?<=<!-- Template Nav Start -->[\n])([\n\s\S]*?)(?=[\s\n]*?<!-- Template Nav End -->)";
string input = @"<!DOCTYPE html>
<html lang=""en"">
<head>
<meta charset=""UTF-8"">
<meta http-equiv=""X-UA-Compatible"" content=""IE=edge"">
<meta name=""viewport"" content=""width=device-width, initial-scale=1.0"">
<meta property=""og:site_name"" content=""WD Proposal"">
<meta property=""og:title"" content=""Your new outdoor living space."">
<meta property=""og:image"" content=""https://www.WhitmerDecks.com/Proposal/eProposal/img/wdLogoName.png"">
<meta property=""og:description"" content=""Here you can view the proposal from Whitmer Decks, LLC"">
</meta>
<!-- General scripts & styles -->
<link rel=""stylesheet"" href=""css/styles.css"">
<link rel=""stylesheet"" href=""css/cwBootstrap.css"">
<script src=""js/cwBootstrap.js"" defer></script>
<!-- Google Fonts -->
<link href=""https://fonts.googleapis.com/css?family=Roboto:300,400,500,700&display=swap"" rel=""stylesheet"">
<!-- Page title and end of general head -->
<title>WD Proposal</title>
<!-- Page specific scripts and styles -->
<script src=""js/about.js"" defer></script>
</head>
<body>
<!-- Template Nav Start -->
<nav>
<ul>
<li><a href=""index.html"">Home</a></li>
<li><a href=""about.html"">About</a></li>
<li>Item X</li>
<li>Item Y</li>
</ul>
</nav>
<!-- Template Nav End -->
<p>
The about page
</p>
</body>
</html>";
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