如何递归列出所有文件在一个目录和子目录在c# ?
当前回答
一些很好的答案,但这些答案并没有解决我的问题。
一旦出现文件夹权限问题:“permission Denied”,代码就会失败。这是我用来解决“Permission Denied”问题的方法:
private int counter = 0;
private string[] MyDirectories = Directory.GetDirectories("C:\\");
private void ScanButton_Click(object sender, EventArgs e)
{
Thread MonitorSpeech = new Thread(() => ScanFiles());
MonitorSpeech.Start();
}
private void ScanFiles()
{
string CurrentDirectory = string.Empty;
while (counter < MyDirectories.Length)
{
try
{
GetDirectories();
CurrentDirectory = MyDirectories[counter++];
}
catch
{
if (!this.IsDisposed)
{
listBox1.Invoke((MethodInvoker)delegate { listBox1.Items.Add("Access Denied to : " + CurrentDirectory); });
}
}
}
}
private void GetDirectories()
{
foreach (string directory in MyDirectories)
{
GetFiles(directory);
}
}
private void GetFiles(string directory)
{
try
{
foreach (string file in Directory.GetFiles(directory, "*"))
{
listBox1.Invoke((MethodInvoker)delegate { listBox1.Items.Add(file); });
}
}
catch
{
listBox1.Invoke((MethodInvoker)delegate { listBox1.Items.Add("Access Denied to : " + directory); });
}
}
希望这能帮助到其他人。
其他回答
一些改进版本,最大lvl下到目录和选项排除文件夹:
using System;
using System.IO;
class MainClass {
public static void Main (string[] args) {
var dir = @"C:\directory\to\print";
PrintDirectoryTree(dir, 2, new string[] {"folder3"});
}
public static void PrintDirectoryTree(string directory, int lvl, string[] excludedFolders = null, string lvlSeperator = "")
{
excludedFolders = excludedFolders ?? new string[0];
foreach (string f in Directory.GetFiles(directory))
{
Console.WriteLine(lvlSeperator+Path.GetFileName(f));
}
foreach (string d in Directory.GetDirectories(directory))
{
Console.WriteLine(lvlSeperator + "-" + Path.GetFileName(d));
if(lvl > 0 && Array.IndexOf(excludedFolders, Path.GetFileName(d)) < 0)
{
PrintDirectoryTree(d, lvl-1, excludedFolders, lvlSeperator+" ");
}
}
}
}
输入目录:
-folder1
file1.txt
-folder2
file2.txt
-folder5
file6.txt
-folder3
file3.txt
-folder4
file4.txt
file5.txt
函数的输出(由于lvl限制,folder5的内容被排除,folder3的内容被排除,因为它在excldedfolders数组中):
-folder1
file1.txt
-folder2
file2.txt
-folder5
-folder3
-folder4
file4.txt
file5.txt
一个非常简单的解决方案,返回一个文件列表。
public static List<string> AllFilesInFolder(string folder)
{
var result = new List<string>();
foreach (string f in Directory.GetFiles(folder))
{
result.Add(f);
}
foreach (string d in Directory.GetDirectories(folder))
{
result.AddRange(AllFilesInFolder(d));
}
return result;
}
列出要建模的文件和文件夹,自定义实现。 这将创建从起始目录开始的所有文件和文件夹的完整列表。
public class DirOrFileModel
{
#region Private Members
private string _name;
private string _location;
private EntryType _entryType;
#endregion
#region Bindings
public string Name
{
get { return _name; }
set
{
if (value == _name) return;
_name = value;
}
}
public string Location
{
get { return _location; }
set
{
if (value == _location) return;
_location = value;
}
}
public EntryType EntryType
{
get { return _entryType; }
set
{
if (value == _entryType) return;
_entryType = value;
}
}
public ObservableCollection<DirOrFileModel> Entries { get; set; }
#endregion
#region Constructor
public DirOrFileModel()
{
Entries = new ObservableCollection<DirOrFileModel>();
}
#endregion
}
public enum EntryType
{
Directory = 0,
File = 1
}
方法:
static DirOrFileModel DirSearch(DirOrFileModel startDir)
{
var currentDir = startDir;
try
{
foreach (string d in Directory.GetDirectories(currentDir.Location))
{
var newDir = new DirOrFileModel
{
EntryType = EntryType.Directory,
Location = d,
Name = Path.GetFileName(d)
};
currentDir.Entries.Add(newDir);
DirSearch(newDir);
}
foreach (string f in Directory.GetFiles(currentDir.Location))
{
var newFile = new DirOrFileModel
{
EntryType = EntryType.File,
Location = f,
Name = Path.GetFileNameWithoutExtension(f)
};
currentDir.Entries.Add(newFile);
}
}
catch (Exception excpt)
{
Console.WriteLine(excpt.Message);
}
return startDir;
}
用法:
var dir = new DirOrFileModel
{
Name = "C",
Location = @"C:\",
EntryType = EntryType.Directory
};
dir = DirSearch(dir);
一个简单干净的解决方案
/// <summary>
/// Scans a folder and all of its subfolders recursively, and updates the List of files
/// </summary>
/// <param name="sFullPath">Full path of the folder</param>
/// <param name="files">The list, where the output is expected</param>
internal static void EnumerateFiles(string sFullPath, List<FileInfo> fileInfoList)
{
try
{
DirectoryInfo di = new DirectoryInfo(sFullPath);
FileInfo[] files = di.GetFiles();
foreach (FileInfo file in files)
fileInfoList.Add(file);
//Scan recursively
DirectoryInfo[] dirs = di.GetDirectories();
if (dirs == null || dirs.Length < 1)
return;
foreach (DirectoryInfo dir in dirs)
EnumerateFiles(dir.FullName, fileInfoList);
}
catch (Exception ex)
{
Logger.Write("Exception in Helper.EnumerateFiles", ex);
}
}
最短的记录
string[] files = Directory.GetFiles(@"your_path", "*.jpg", SearchOption.AllDirectories);
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