如何递归列出C＃目录中的所有文件？

超、凢脫俗 2023-03-04 03:28 34阅读 0赞

本文翻译自：[How to recursively list all the files in a directory in C\#?][How to recursively list all the files in a directory in C]

如何递归列出C＃中目录和子目录中的所有文件？

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### \#1楼 ###

参考：[https://stackoom.com/question/3TKk/如何递归列出C-目录中的所有文件][https_stackoom.com_question_3TKk_C-]

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### \#2楼 ###

*In .NET 4.5, at least, there's this version that is much shorter and has the added bonus of evaluating any file criteria for inclusion in the list:* **至少在.NET 4.5中，此版本要短得多，并且具有评估包含在列表中的任何文件条件的额外好处：**

/// </remarks>
        public static IEnumerable<string> GetAllFiles(string path, Func<FileInfo, bool> checkFile = null)
        {
            string mask = Path.GetFileName(path);
            if (string.IsNullOrEmpty(mask))
                mask = "*.*";
            path = Path.GetDirectoryName(path);
            string[] files = Directory.GetFiles(path, mask, SearchOption.AllDirectories);
            foreach (string file in files)
            {
                if (checkFile == null || checkFile(new FileInfo(file)))
                    yield return file;
            }
        }

*Use like:* **使用方式如下：**

string folder = Config.TestInput();
            string mask = folder + "*.*";
            var list = UT.GetAllFiles(mask, (info) => Path.GetExtension(info.Name) == ".html").ToList();
            Assert.AreNotEqual(0, list.Count);
            var lastQuarter = DateTime.Now.AddMonths(-3);
            list = UT.GetAllFiles(mask, (info) => info.CreationTime >= lastQuarter).ToList();
            Assert.AreNotEqual(0, list.Count);

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### \#3楼 ###

*Some excellent answers but these answers did not solve my issue.* **一些很好的答案，但是这些答案并不能解决我的问题。**

*As soon as a folder permission issue arises: "Permission Denied" the code fails.* **一旦出现文件夹权限问题：“权限被拒绝”，代码将失败。** *This is what I used to get around the "Permission Denied" issue:* **这是我用来解决“权限被拒绝”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); });
            }
        }

*Hope this helps others.* **希望这对其他人有帮助。**

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### \#4楼 ###

*In Framework 2.0 you can use (It list files of root folder, it's best the most popular answer):* **在Framework 2.0中，您可以使用（列出根文件夹的文件，最好是最受欢迎的答案）：**

static void DirSearch(string dir)
    {
        try
        {
            foreach (string f in Directory.GetFiles(dir))
                Console.WriteLine(f);
            foreach (string d in Directory.GetDirectories(dir))
            {
                Console.WriteLine(d);
                DirSearch(d);
            }
    
        }
        catch (System.Exception ex)
        {
            Console.WriteLine(ex.Message);
        }
    }

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### \#5楼 ###

*Here's my angle on it, based on Hernaldo's, if you need to find files with names of a certain pattern, such as XML files that somewhere in their name contain a particular string:* **如果您需要查找具有特定模式名称的文件，例如在其名称中某处包含特定字符串的XML文件，那么基于Hernaldo，这是我的看法。**

// call this like so: GetXMLFiles("Platypus", "C:\\");
    public static List<string> GetXMLFiles(string fileType, string dir)
    {
        string dirName = dir; 
        var fileNames = new List<String>();
        try
        {
            foreach (string f in Directory.GetFiles(dirName))
            {
                if ((f.Contains(fileType)) && (f.Contains(".XML")))
                {
                    fileNames.Add(f);
                }
            }
            foreach (string d in Directory.GetDirectories(dirName))
            {
                GetXMLFiles(fileType, d);
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message);
        }
        return fileNames;
    }

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### \#6楼 ###

*Here is a version of B. Clay Shannon's code not static for excel-files:* **这是B. Clay Shannon的代码对于excel文件不是静态的：**

class ExcelSearcher
    {
        private List<string> _fileNames;
    
        public ExcelSearcher(List<string> filenames)
        {
            _fileNames = filenames;
        }
        public List<string> GetExcelFiles(string dir, List<string> filenames = null)
        {
    
            string dirName = dir;
            var dirNames = new List<string>();
            if (filenames != null)
            {
                _fileNames.Concat(filenames);
            }
            try
            {
                foreach (string f in Directory.GetFiles(dirName))
                {
                    if (f.ToLower().EndsWith(".xls") || f.ToLower().EndsWith(".xlsx"))
                    {
                        _fileNames.Add(f);
                    }
                }
                dirNames = Directory.GetDirectories(dirName).ToList();
                foreach (string d in dirNames)
                {
                    GetExcelFiles(d, _fileNames);
                }
            }
            catch (Exception ex)
            {
                //Bam
            }
            return _fileNames;
        }

[How to recursively list all the files in a directory in C]: https://oldbug.net/q/3TKk/How-to-recursively-list-all-the-files-in-a-directory-in-C
[https_stackoom.com_question_3TKk_C-]: https://stackoom.com/question/3TKk/%E5%A6%82%E4%BD%95%E9%80%92%E5%BD%92%E5%88%97%E5%87%BAC-%E7%9B%AE%E5%BD%95%E4%B8%AD%E7%9A%84%E6%89%80%E6%9C%89%E6%96%87%E4%BB%B6