using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(.*?)\/(?<mnemonic>.{2,8}?)_(?<isbn>\d{13})_(?<primaryId>all|tx\d{0,3}|lay\d{0,3}|c0\d{1,3}|c[^0]\d{1,2}?)_(?<secondaryId>(\d{1,2}|x)p)(?:_r(?<revisionNumber>\d+))?\.(?<extension>indd|qxp|qxd)$
";
string input = @"Obam_9781524763138_all_tcx_r3 Folder/Obam_9781524763138_all_0p_r3.indd
Obam_9781524763138_all_tcx1_r3 Folder/Obam_9781524763138_all_1p_r3.indd
Obam_9781524763138_all_tcx123 Folder/Obam_9781524763138_all_2p_r3.indd
Obam_9781524763138_all_tcx123 Folder/Obam_9781524763138_all_123p_r3.indd
Obam_9781524763138_all_tcx123 Folder/Obam_9781524763138_tx_xp_r3.indd
Obam_9781524763138_all_tcx1234_r3 Folder/Obam_9781524763138_all_tcx1234_r3.indd
";
RegexOptions options = RegexOptions.Multiline;
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