using System;

using System.IO;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var folder = "folderName";

        var file = "D0548 CUSTOM JF548SAE_extract.txt.1241111.092339";

        var match = Regex.Match(file, @"^(?:.*)(JF548SA[ED])(?:.*)");

        Console.WriteLine(match.Success);

        int matchCount = 0;

      while (match.Success)

      {

         Console.WriteLine("Match"+ (++matchCount));

         for (int i = 1; i <= 2; i++)

         {

            Group g = match.Groups[i];

            Console.WriteLine("Group"+i+"='" + g + "'");

            CaptureCollection cc = g.Captures;

            for (int j = 0; j < cc.Count; j++)

            {

               Capture c = cc[j];

               System.Console.WriteLine("Capture"+j+"='" + c + "', Position="+c.Index);

            }

         }

         match = match.NextMatch();

      }

        var t = DateTime.Now.ToString("MM_yyyy");

        Console.WriteLine(t);

    }

}