using System;

using System.Collections;

using System.IO;

namespace Devintelligence.IO 

{ 

    public class IOUtils 

    { 

        private IOUtils() 

        { 

        } 

        public static string[] GetAllDirectories(string root) 

        { 

            ArrayList list = new ArrayList(); 

            Stack stack = new Stack(); 

            string[] folders = Directory.GetDirectories(root); 

            AddRange(folders, stack); 

            while (stack.Count > 0) 

            { 

                string path = (string)stack.Pop(); 

                list.Add(path); 

                folders = Directory.GetDirectories(path); 

                AddRange(folders, stack); 

            } 

            return (string[])list.ToArray(typeof(string)); 

        } 

        private static void AddRange(string[] elements, Stack stack) 

        { 

            foreach (string element in elements) 

            { 

                stack.Push(element); 

            } 

        } 

    } 

}