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  1. using System;
  2. using System.Linq;
  3. using System.Text.RegularExpressions;
  4.  
  5. public class Test
  6. {
  7. 	public static void Main()
  8. 	{
  9. 		var regex = new Regex(@"(?<=headerb)[\r\n]*(?:aa(?<number>\d+)aaa[\r\n]*)+(?=headerc)", RegexOptions.Singleline);
  10.         var match = regex.Match(_input);
  11.         if (match.Success)
  12.         {
  13.             foreach (var number in match.Groups["number"].Captures.Cast<Capture>())
  14.             {
  15.                 Console.WriteLine(number);
  16.             }
  17.         }
  18. 	}
  19.  
  20. 	private static readonly string _input = @"headera
  21. aa1aaa
  22. aa2aaa
  23. aa3aaa
  24.  
  25. headerb
  26. aa4aaa
  27. aa5aaa
  28. aa6aaa
  29.  
  30. headerc
  31. aa7aaa
  32. aa8aaa
  33. aa9aaa";
  34. }
Success #stdin #stdout 0.13s 24688KB
comments (?)
stdin 
Standard input is empty
stdout 
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https://ideone.com/Kc09HL
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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