using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\R+(?=\[\d{2}-\d{2}-\d{4} \d{2}:\d{2}:\d{2}])";
string substitution = @"\n--------------\n";
string input = @"[30-05-2013 15:45:54] A A
[26-06-2013 14:44:44] B A
[26-06-2013 14:44:44] C A
[26-06-2013 14:43:16] Some lines are so large, they take multiple lines, so explode('\n') won't work because
I need the complete message
[26-06-2013 14:44:44] E A
[26-06-2013 14:44:44] F A
[26-06-2013 14:44:44] G A";
Regex regex = new Regex(pattern);
string result = regex.Replace(input, substitution);
}
}
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