C# 再帰的にフォルダを取得する

using System;
using System.IO;

namespace ConsoleApp1
{
    internal class Program
    {
        static void Main(string[] args)
        {

            string[] files = Directory.GetFiles(@"C:\sample", "*", SearchOption.AllDirectories);

            foreach (var file in files)
            {
                Console.WriteLine(file);
            }

        }

    }
}