using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"@if(?:\s+|)\(([\s\S]*?)\)([\s\S]*?)+@endif";
string input = @"<div class=""wrapper"">
<p>Parágrafo fora dos ifs.</p>
@if (true)
<div>Oi?</div>
@if (false)
<span>Não devo ser renderizado</span>
@endif
@endif
<p>Estou entre os if's</p>
@if (true)
<div>estou em outro if</div>
@endif
</div>";
RegexOptions options = RegexOptions.IgnoreCase;
Match m = Regex.Match(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