C#遍历目录下的所有文件夹

来源：互联网发布：老舍的人品知乎编辑：程序博客网时间：2024/04/20 00:25

//这个是网上转的上一个也是仿照这个改的同样是win32控制台程序学习！

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace TestFileInfo
{
    class Program
    {
        static void Main(string[] args)
        {
            string pathNames=null;
            do
            {
                Console.Write("请输入目录路径名(输入x退出程序):");
                pathNames = Console.ReadLine();
                if ((pathNames == "X") || (pathNames == "x"))
                    break;
                DirectoryInfo dirPath = new DirectoryInfo(pathNames);
                CDirectoryInfo dirObject = new CDirectoryInfo();
                Console.Write(dirObject.GetDirectoryInfos(dirPath));
                Console.WriteLine("______________________________________________________/n");
                //dirObject.pathNameProp = null;
                //Console.Write(dirObject.GetDirectoryInfos(pathNames));
                //Console.WriteLine("_____________________________________________________");
            }
            while (true);//((pathName == "X") || (pathName == "x"));
            Console.Write("/n程序已终止，按任意键退出程序!");
            Console.ReadKey();
        }
    }

    class CDirectoryInfo
    {
        string pathName=null;
        public string pathNameProp
        {
            set
            {
                pathName = value;
            }
            get
            {
                return pathName;
            }
        }

        /// <summary>
        /// 遍历核心代码
        /// </summary>
        /// <param name="fatherDir"></param>
        /// <returns></returns>
        public string GetDirectoryInfos(DirectoryInfo fatherDir)
        {
            try
            {
                DirectoryInfo[] childDir = fatherDir.GetDirectories();
                if (childDir.Length == 0)                               //如果已无下层目录，则将当前目录的完整路径加入到pathName变量中
                    return pathName += fatherDir.FullName + "/n";
                else
                {
                    for (int i = 0; i < childDir.Length; i++)           //如果有下层目录，则递归每一个下层目录，且在第一次循环时
                    {                                                   //将当前目录的完整路径加入到pathName变量中加入
                        if (i == 0)
                            pathName += fatherDir.FullName + "/n";
                        GetDirectoryInfos(childDir[i]);
                    }
                    return pathName;
                }
            }
            catch (DirectoryNotFoundException ex)
            {
                return "你输入的路径无效，它可能不存在或者该路径拒绝访问。/n相关提示:/n"
                        + ex.Message + "/n";
            }
            catch (UnauthorizedAccessException ex)
            {
                return "你输入的路径无效，该路径可能拒绝访问。/n相关提示:/n"
                        + ex.Message + "/n";
            }
        }

        /// <summary>
        /// 遍历文件夹的重载函数
        /// </summary>
        /// <param name="pathName"></param>
        /// <returns></returns>
        public string GetDirectoryInfos(string pathName)
        {
            try
            {
                DirectoryInfo fatherDir = new DirectoryInfo(pathName);
                DirectoryInfo[] childDir = fatherDir.GetDirectories();
                if (childDir.Length == 0)
                    return this.pathName += fatherDir.FullName + "/n";
                else
                {
                    for (int i = 0; i < childDir.Length; i++)
                    {
                        if (i == 0)
                            this.pathName += fatherDir.FullName + "/n";
                        GetDirectoryInfos(childDir[i].FullName);
                    }
                    return this.pathName;
                }
            }
            catch (DirectoryNotFoundException ex)
            {
                return "你输入的路径无效，它可能不存在或者该路径拒绝访问。/n相关提示:/n"
                        + ex.Message + "/n";
            }
            catch (UnauthorizedAccessException ex)
            {
                return "你输入的路径无效，该路径可能拒绝访问。/n相关提示:/n"
                        + ex.Message + "/n";
            }
        }
    }
}