递归和非递归遍历文件

Posted 2020-08-17

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 遍历目录
{
    class Program
    {
        static void GetAllFiles(string dirPath)
        {

            List<string> list = new List<string>();
            DirectoryInfo dir = new DirectoryInfo(dirPath);
            DirectoryInfo[] dirList = dir.GetDirectories();
            for (int i = 0; i < dirList.Length; i++)
            {
                list.Add(dirList[i].FullName);
                GetAllFiles(dirList[i].FullName);
            }
            for (int i = 0; i < list.Count; i++)
            {
                Console.WriteLine(list[i]);
            }
        }
        static void GetAllFile2(string dirPath)
        {
            Stack<string> skDir = new Stack<string>();
            skDir.Push(dirPath);
            while (skDir.Count > 0)
            {
                dirPath = skDir.Pop();
                string[] subDirs = Directory.GetDirectories(dirPath);
                string[] subFiles = Directory.GetFiles(dirPath);
                if(subDirs != null)
                {
                    for (int i = 0; i < subDirs.Length; i++)
                    {
                        //Path.GetFileName(subDirs[i]);
                        skDir.Push(subDirs[i]);
                    }
                }
                if (subFiles != null)
                {
                    for (int i = 0; i < subFiles.Length; i++)
                    {
                        Console.WriteLine(subFiles[i]);
                    }
                }
            }
        }
        static void Main(string[] args)
        {
            long startTime = DateTime.Now.Ticks;
            string dir = @"F:\开发资料";
            GetAllFile2(dir);
            long endTime = DateTime.Now.Ticks;
            Console.WriteLine("耗时{0}", endTime - startTime);
        }
    }
}