using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(?(DEFINE)
(?P<date>\d{2}/\d{2}/\d{2},\ \d{2}:\d{2})
)
^
(?&date)
(?:(?!^(?&date)).)+";
string input = @"27/08/15, 15:45 - text
continue text
continue text 2
27/08/15, 16:10 - new text
new text 2
new text 3
27/08/15, 19:55 - more text";
RegexOptions options = RegexOptions.Multiline | RegexOptions.IgnorePatternWhitespace | RegexOptions.Singleline;
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