test

CSharp · Console

/Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
					
public class Program
{
	public static void Main()
	{
        var result = Regex.Match(@"D:\DataFiles\Files_81\aars2016FAKH1800010.pdf", @"\\\w*(FAKH)\w*\.pdf");
        var FAKH = result.Groups[1].Value;
		Console.WriteLine(FAKH);
	}
}