using System;

using System.IO;

public class Program

{

    public static void Main()

    {

                    //Path Class

​

            var path = @"C:\Users\Arturo\Desktop\Folders\Photos\txt.txt";

​

            Console.WriteLine("Extension: " + Path.GetExtension(path)  );

​

            Console.WriteLine("FileName: " + Path.GetFileName(path));

​

            Console.WriteLine("Filename without ext: " + Path.GetFileNameWithoutExtension(path));

​

            Console.WriteLine("Directory Name: " + Path.GetDirectoryName(path));

​

            //etc....

            //Use Microsoft to see further.

    }

}