DirectoryInfo输出，目录缺失

Question

我正在尝试使用DirectoryInfo.GetDirectories()查找给定路径下的每个目录。

问题是它似乎工作正常，当UnauthorizedAccess Exception尝试从System Volume Information读取时，除using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; using System.Threading; using System.Windows.Forms; namespace WolfPaw_Duplicate_Search_and_Destroy { class FindDirectories { DirectoryInfo[] tempDirectoryInfo; DirectoryInfo[] fullDirectoryInfo; String tmpDirInfo = ""; String tmpDirInfo2 = ""; String[] fullDirInfo = new String[1000000]; DirectoryInfo[] dinf = new DirectoryInfo[100]; public DirectoryInfo[] getDirectories(DirectoryInfo[] dinf) { tempDirectoryInfo = dinf; GetDirectories(); return fullDirectoryInfo; } private void GetDirectories() { try { int index = 0; try { foreach (DirectoryInfo dinf in tempDirectoryInfo) { if (dinf != null) foreach (DirectoryInfo dd in dinf.GetDirectories()) { if (dd != null) { tmpDirInfo += dd.FullName + "♣"; index++; } } } } catch(Exception ex) { MessageBox.Show("Current working directories: " + tmpDirInfo + Environment.NewLine + "Error Message: " + ex.Message); } tmpDirInfo2 += tmpDirInfo; tempDirectoryInfo = new DirectoryInfo[index]; index = 0; foreach (String s in tmpDirInfo.Split('♣')) { if (s.Length > 0) tempDirectoryInfo[index] = new DirectoryInfo(s); index++; } tmpDirInfo = ""; int i = 0; foreach (DirectoryInfo x in tempDirectoryInfo) { if (x != null) i++; } if (tempDirectoryInfo.Length != 0) { GetDirectories(); } else { StringToDirInfo(tmpDirInfo2); } } catch (UnauthorizedAccessException) { } catch (Exception) { throw; } } private void StringToDirInfo(String s_dInfo) { int index = 0; foreach (String s in s_dInfo.Split('♣')) { index++; } fullDirectoryInfo = new DirectoryInfo[index]; index = 0; foreach (String s in s_dInfo.Split('♣')) { if (s.Length > 0) { fullDirectoryInfo[index] = new DirectoryInfo(s); index++; } } } } } 之外没有任何错误，但仍然在它缺少目录的所有内容的末尾。

根据TotalCMD（使用属性选项）我的D：\ Drive有4580个目录，根据Windows资源管理器它有4574个，根据我的程序它有4566个...

我已经尝试了我能想到的一切。逐个检查DIR-s，清空回收站，包括手动隐藏目录，但似乎没有任何区别。还有，不只是在我的D盘上......

这是一个常见的错误还是有原因？

（刚提到我自己完全学习c＃所以我的做法可能完全错了，这就是我如何通过我还不知道的事情）

编辑：我的所有代码：

FindDirectories.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

namespace WolfPaw_Duplicate_Search_and_Destroy
{
    public partial class Form1 : Form
    {
            public Form1()
            {
                    InitializeComponent();

                    foreach(String s in Environment.GetLogicalDrives())
                    {
                            DriveInfo dinf1 = new DriveInfo(s);

                            try
                            {
                                    if(dinf1.DriveType != DriveType.CDRom)
                                    {
                                            textBox_Dirs.Text += s + "||";
                                    }
                            }
                            catch { }
                    }

                    comboBox_Larger.SelectedIndex = 0;
                    comboBox_Smaller.SelectedIndex = 0;
            }

            private void button_DirResize_Click(object sender, EventArgs e)
            {
                    if (textBox_Dirs.Height < 100)
                    {
                            textBox_Dirs.Height = 100;
                            textBox_Dirs.Multiline = true;
                            button_DirResize.Top = textBox_Dirs.Bottom - (button_DirResize.Height / 2); 
                    }
                    else
                    {
                            textBox_Dirs.Height = 20;
                            textBox_Dirs.Multiline = false;
                            button_DirResize.Top = textBox_Dirs.Bottom - (button_DirResize.Height / 2); 
                    }

                    textBox_FileTypes.Top = textBox_Dirs.Bottom + 15;
                    comboBox_Filetypes.Top = textBox_FileTypes.Top;
                    label_FyleType.Top = textBox_FileTypes.Top + ((textBox_FileTypes.Height / 2) - (label_FyleType.Height / 2));
                    button_FileTypeResize.Top = textBox_FileTypes.Bottom - (button_FileTypeResize.Height / 2);
            }

            private void comboBox_Filetypes_SelectedIndexChanged(object sender, EventArgs e)
            {
                    if (comboBox_Filetypes.SelectedItem.ToString().Contains("*.*") == false)
                    {
                            if (textBox_FileTypes.Text.Contains("*.*; "))
                            {
                                    textBox_FileTypes.Text = textBox_FileTypes.Text.Replace("*.*; ", "");
                            }
                            else if (textBox_FileTypes.Text.Contains("*.*;"))
                            {
                                    textBox_FileTypes.Text = textBox_FileTypes.Text.Replace("*.*;", "");
                            }
                            else if (textBox_FileTypes.Text.Contains("*.*"))
                            {
                                    textBox_FileTypes.Text = textBox_FileTypes.Text.Replace("*.*", "");
                            }

                    }

                    textBox_FileTypes.Text += comboBox_Filetypes.SelectedItem.ToString().Substring(comboBox_Filetypes.SelectedItem.ToString().IndexOf("(") + 1).Replace(")","") + "; ";
            }

            private void textBox_FileTypes_TextChanged(object sender, EventArgs e)
            {
                    if(textBox_FileTypes.Text.Contains("*.*"))
                    {
                            textBox_FileTypes.Text = "*.*;";
                    }
                    else if(textBox_FileTypes.Text.Contains("; ; "))
                    {
                            textBox_FileTypes.Text = textBox_FileTypes.Text.Replace("; ; ","; ");
                    }
                    else if (textBox_FileTypes.Text.Contains(";; "))
                    {
                            textBox_FileTypes.Text = textBox_FileTypes.Text.Replace(";; ", "; ");
                            textBox_FileTypes.SelectionStart = textBox_FileTypes.Text.Length;
                            textBox_FileTypes.Select();
                    }
            }

            private void button_FileTypeResize_Click(object sender, EventArgs e)
            {
                    if (textBox_FileTypes.Height < 100)
                    {
                            textBox_FileTypes.Height = 100;
                            textBox_FileTypes.Multiline = true;
                            button_FileTypeResize.Top = textBox_FileTypes.Bottom - (button_FileTypeResize.Height / 2);
                    }
                    else
                    {
                            textBox_FileTypes.Height = 20;
                            textBox_FileTypes.Multiline = false;
                            button_FileTypeResize.Top = textBox_FileTypes.Bottom - (button_FileTypeResize.Height / 2);
                            label_FyleType.Top = textBox_FileTypes.Top + ((textBox_FileTypes.Height / 2) - (label_FyleType.Height / 2));
                    }

                    textBox_FileTypes.Top = textBox_Dirs.Bottom + 15;
                    comboBox_Filetypes.Top = textBox_FileTypes.Top;

            }

            private void button1_Click(object sender, EventArgs e)
            {
                    if (label_FileBeingChecked.Height < 100)
                    {
                            label_FileBeingChecked.Height = 100;
                            button1.Text = "↑";
                            button1.Cursor = Cursors.PanNorth;
                    }
                    else
                    {
                            label_FileBeingChecked.Height = 24;
                            button1.Text = "↓";
                            button1.Cursor = Cursors.PanSouth;
                    }

                    progressBar1.Top = label_FileBeingChecked.Bottom + 2;
                    label_FNumber.Top = progressBar1.Bottom + 4;
                    label_NumOfFiles.Top = progressBar1.Bottom + 4;
            }

            private void button_Browse_Click(object sender, EventArgs e)
            {
                    FolderBrowserDialog ofd = new FolderBrowserDialog();
                    DialogResult dres = ofd.ShowDialog();

                    if(dres == System.Windows.Forms.DialogResult.OK)
                    {
                            textBox_Dirs.Text += ofd.SelectedPath + "||";
                    }
            }

            private void button_Start_Click(object sender, EventArgs e)
            {
                    StartSearch();
            }

            public void StartSearch()
            {
                    //Get Directory List

                    FindDirectories fd = new FindDirectories();

                    int index = 0;

                    String[] s_Dirs = textBox_Dirs.Text.Replace("||","↓").Split('↓');

                    DirectoryInfo[] di = new DirectoryInfo[s_Dirs.Length];

                    foreach(String s in s_Dirs)
                    {
                            if(s.Length != 0)
                            di[index] = new DirectoryInfo(s);
                            index++;
                    }

                    DirectoryInfo[] dinfo = fd.getDirectories(di);

                    int xx = 0;
                    String testStr = "";
                    foreach (DirectoryInfo d in dinfo)
                    {
                            if (d != null)
                            {
                                    //testStr += d.Root + "  |  " + d.Parent + "  |  " + d.FullName + "♣";
                                    xx++;
                            }
                    }
                    //testStr += "♣♣ # of Directories found:" + xx;
                    //File.WriteAllText(@"C:\t.txt",testStr.Replace("♣",Environment.NewLine));

                    MessageBox.Show(xx.ToString());
            }

    }
}

Form1.cs的

{{1}}

Answer 1

我要跳枪并假设您首先要获取给定路径下的所有目录的单个列表（递归）。这段代码应该这样做：

string[] allDirs = Directory.GetDirectories(@"D:\", "*.*", SearchOption.AllDirectories);

或者如果您需要基于模式的所有文件，请使用：

string[] allFiles = Directory.GetFiles(@"D:\", "*.*", SearchOption.AllDirectories);

修改

如果您遇到UnauthorizedAccessException问题，可以使用LINQ和递归来推送自己的实现，例如：

private static IEnumerable<string> MyGetDirectories(string basePath)
{
    try
    {
        string[] dirs = Directory.GetDirectories(basePath);
        return dirs.Union(dirs.SelectMany(dir => MyGetDirectories(dir)));
    }
    catch(UnauthorizedAccessException)
    {
        return Enumerable.Empty<string>();
    }
}

您可以使用以下内容调用（并转回数组）：

string[] allDirs = MyGetDirectories(@"D:\").ToArray();

支持多个基本路径

如果你有一个包含多个基本路径的数组，我们可以再次使用SelectMany将所有内容放在一个列表中，所以：

string[] basePaths = new string[] { @"C:\", @"D:\" };
string[] allDirs = basePaths.SelectMany(dir => MyGetDirectories(dir)).ToArray();

这意味着对于basePaths中的每个项目，我们将使用该条目来选择许多匹配的项目（在这种情况下通过调用MyGetDirectories）然后将所有内容连接成一个大项目名单。在最后一步中，它将转换回数组。