using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(.*?)(?=On\s+\d{2}\-\d+\-\d+|\#{2}\-.*?\-\#{2})";
string input = @"Second reply. #2
Met vriendelijke groet,
{sender name}
{company details}
On 25-02-15 14:38, {email name} wrote:
> [Ticket ID: 54e70396110971424425] Re: 54e70396110,678567.971424425
>
> ##- Please type your reply above this line -##
>
> Your request (54e70396110971424425) has been deemed solved. To reopen,
> please reply to this email or login on {name} to reply.
>
> ------------------------------------------------------------------------
>
> Feb 25, 14:38
>
> Dear Test user,
>
> First reply. #1
>
>
> {name}
> {company details}
>";
RegexOptions options = RegexOptions.Singleline;
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