I have folder , subfolder and files

class Program
	{
		static void Main(string[] args)
		{
			var d = new DirectoryInfo(@"D:/temp");
			d.CreateSubdirectory("a/b/c");
			d.CreateSubdirectory("a/c");
			File.Create(@"c:/temp/a/c/abc.doc");
			Console.ReadLine();
		}
	}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace FolderSubfolderFile
{
    class Program
    {
        static void Main(string[] args)
        {
            DirectoryInfo din = new DirectoryInfo("C:\\a");
            SearchDirectory(din);
            Console.ReadKey();
        }

        static void SearchDirectory(DirectoryInfo din)
        {

            SearchFile(din);
            foreach (DirectoryInfo dinf in din.GetDirectories())
            {
                if (IsSystem(dinf.FullName))
                    continue;
                SearchDirectory(dinf);
            }
        }

        static void SearchFile(DirectoryInfo dinf)
        {
            foreach (FileInfo fin in dinf.GetFiles())
            {
                string newFullName = fin.FullName.Replace("C:\\", "D:\\");
                string dirs = newFullName.Remove(newFullName.LastIndexOf("\\"));
                if (!Directory.Exists(dirs))
                {
                    Directory.CreateDirectory(dirs);
                }
                File.Create(newFullName);
            }
        }
        public static bool IsSystem(string path)
        {
            FileAttributes attributes = File.GetAttributes(path);
            return (attributes & FileAttributes.System) != 0;
        }
    }
}