如何列出目录中的所有子目录

Question

I'm working on a project and I need to list all sub directories in a directory for example how could I list all the sub directories in c:\

Answer 1

Use Directory.GetDirectories to get the subdirectories of the directory specified by "your_directory_path" . The result is an array of strings.

var directories = Directory.GetDirectories("your_directory_path");

By default, that only returns subdirectories one level deep. There are options to return all recursively and to filter the results, documented here , and shown in Clive's answer.

---

Avoiding an UnauthorizedAccessException

It's easily possible that you'll get an UnauthorizedAccessException if you hit a directory to which you don't have access.

You may have to create your own method that handles the exception, like this:

public class CustomSearcher
{ 
    public static List<string> GetDirectories(string path, string searchPattern = "*",
        SearchOption searchOption = SearchOption.AllDirectories)
    {
        if (searchOption == SearchOption.TopDirectoryOnly)
            return Directory.GetDirectories(path, searchPattern).ToList();

        var directories = new List<string>(GetDirectories(path, searchPattern));

        for (var i = 0; i < directories.Count; i++)
            directories.AddRange(GetDirectories(directories[i], searchPattern));

        return directories;
    }

    private static List<string> GetDirectories(string path, string searchPattern)
    {
        try
        {
            return Directory.GetDirectories(path, searchPattern).ToList();
        }
        catch (UnauthorizedAccessException)
        {
            return new List<string>();
        }
    }
}

And then call it like this:

var directories = CustomSearcher.GetDirectories("your_directory_path");

This traverses a directory and all its subdirectories recursively. If it hits a subdirectory that it cannot access, something that would've thrown an UnauthorizedAccessException , it catches the exception and just returns an empty list for that inaccessible directory. Then it continues on to the next subdirectory.

Answer 2

像这样简单：

string[] folders = System.IO.Directory.GetDirectories(@"C:\My Sample Path\","*", System.IO.SearchOption.AllDirectories);

Answer 3

FolderBrowserDialog fbd = new FolderBrowserDialog();

        DialogResult result = fbd.ShowDialog();

        string[] files = Directory.GetFiles(fbd.SelectedPath);
        string[] dirs = Directory.GetDirectories(fbd.SelectedPath);

        foreach (string item2 in dirs)
        {
            FileInfo f = new FileInfo(item2);

            listBox1.Items.Add(f.Name);

        }

        foreach (string item in files)
        {
            FileInfo f = new FileInfo(item);

            listBox1.Items.Add(f.Name);

        }

Answer 4

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

namespace TRIAL
{
    public class Class1
    {
        static void Main(string[] args)
        {
           string[] fileArray = Directory.GetDirectories("YOUR PATH");
           for (int i = 0; i < fileArray.Length; i++)
           {

               Console.WriteLine(fileArray[i]);
           }
            Console.ReadLine();
        }
    }
}

Answer 5

要获取没有完整路径的简单文件夹列表，您可以使用：

Directory.GetDirectories(parentDirectory).Select(d => Path.GetRelativePath(parentDirectory, d)

Answer 6

Here's Best and Fastest Way To List All Directories and Subdirectories by Skipping System.UnauthorizedAccessException

A simple recursive method with action to retrieve at realtime, preparing a list and returning to parent takes a lot of time, this call back function helps a lot to retrieve at realtime instead of preparing and returning back

using System.IO;

private static void ListDirectories(string Path, Action<string> Listen){
    try
    {
        foreach(string Node in Directory.GetDirectories(Path)){
            Listen(Node);
            ListDirectories(Node, Listen);
        }
    } catch {}
}

Usase

static void Main(string[] args)
{
    ListDirectories(@"C:\", (dir) =>
    {
        Console.WriteLine(dir);
    });
}

Answer 7

show all directry and sub directories

def dir():

from glob import glob

dir = []

dir = glob("path")

def all_sub_dir(dir):
{

     for item in dir:

            {
                b = "{}\*".format(item)
                dir += glob(b)
            }
         print(dir)
}