[C#][转载]如何删除目录中的所有文件和文件夹

深碍√TFBOYSˉ_ 2022-08-28 10:53 277阅读 0赞

使用C＃，如何从目录中删除所有文件和文件夹，但仍保留根目录？

29个解决方案

657 votes

System.IO.DirectoryInfo di = new DirectoryInfo("YourPath");
    
    foreach (FileInfo file in di.GetFiles())
    {
        file.Delete(); 
    }
    foreach (DirectoryInfo dir in di.GetDirectories())
    {
        dir.Delete(true); 
    }

--------------------

如果您的目录可能包含许多文件，则`GetFiles()`比`GetDirectories()`更有效，因为当您使用`EnumerateFiles()`时，您可以在返回整个集合之前开始枚举它，而不是`GetFiles()`，您需要在开始枚举之前将整个集合加载到内存中 它。 在这里看到这个引用：

> 因此，当您使用许多文件和目录时，EnumerateFiles（）可以更有效。

这同样适用于`GetFiles()`和`GetDirectories()`.因此代码将是：

foreach (FileInfo file in di.EnumerateFiles())
    {
        file.Delete(); 
    }
    foreach (DirectoryInfo dir in di.EnumerateDirectories())
    {
        dir.Delete(true); 
    }

出于这个问题的目的，没有理由使用`GetFiles()`和`GetDirectories()`。

[gsharp][] answered 2018-12-26T10:24:56Z

162 votes

是的，这是正确的方法。 如果你想给自己一个“干净”（或者，我更喜欢称之为“清空”功能），你可以创建一个扩展方法。

public static void Empty(this System.IO.DirectoryInfo directory)
    {
        foreach(System.IO.FileInfo file in directory.GetFiles()) file.Delete();
        foreach(System.IO.DirectoryInfo subDirectory in directory.GetDirectories()) subDirectory.Delete(true);
    }

这将允许你做类似的事情..

System.IO.DirectoryInfo directory = new System.IO.DirectoryInfo(@"C:\...");
    
    directory.Empty();

[Adam Robinson][] answered 2018-12-26T10:25:20Z

64 votes

以下代码将递归清除该文件夹：

private void clearFolder(string FolderName)
    {
        DirectoryInfo dir = new DirectoryInfo(FolderName);
    
        foreach(FileInfo fi in dir.GetFiles())
        {
            fi.Delete();
        }
    
        foreach (DirectoryInfo di in dir.GetDirectories())
        {
            clearFolder(di.FullName);
            di.Delete();
        }
    }

[hiteshbiblog][] answered 2018-12-26T10:25:41Z

37 votes

new System.IO.DirectoryInfo(@"C:\Temp").Delete(true);
    
     //Or
    
     System.IO.Directory.Delete(@"C:\Temp", true);

[Thulasiram][] answered 2018-12-26T10:25:56Z

36 votes

我们也可以表达对LINQ的热爱：

using System.IO;
    using System.Linq;
    …
    var directory = Directory.GetParent(TestContext.TestDir);
    
    directory.EnumerateFiles()
        .ToList().ForEach(f => f.Delete());
    
    directory.EnumerateDirectories()
        .ToList().ForEach(d => d.Delete(true));

请注意，我的解决方案不符合要求，因为我使用的是`Get*().ToList().ForEach(...)`两次生成相同的`IEnumerable`。 我使用扩展方法来避免此问题：

using System.IO;
    using System.Linq;
    …
    var directory = Directory.GetParent(TestContext.TestDir);
    
    directory.EnumerateFiles()
        .ForEachInEnumerable(f => f.Delete());
    
    directory.EnumerateDirectories()
        .ForEachInEnumerable(d => d.Delete(true));

这是扩展方法：

/// <summary>
    /// Extensions for <see cref="System.Collections.Generic.IEnumerable"/>.
    /// </summary>
    public static class IEnumerableOfTExtensions
    {
        /// <summary>
        /// Performs the <see cref="System.Action"/>
        /// on each item in the enumerable object.
        /// </summary>
        /// <typeparam name="TEnumerable">The type of the enumerable.</typeparam>
        /// <param name="enumerable">The enumerable.</param>
        /// <param name="action">The action.</param>
        /// <remarks>
        /// “I am philosophically opposed to providing such a method, for two reasons.
        /// …The first reason is that doing so violates the functional programming principles
        /// that all the other sequence operators are based upon. Clearly the sole purpose of a call
        /// to this method is to cause side effects.”
        /// —Eric Lippert, “foreach” vs “ForEach” [http://blogs.msdn.com/b/ericlippert/archive/2009/05/18/foreach-vs-foreach.aspx]
        /// </remarks>
        public static void ForEachInEnumerable<TEnumerable>(this IEnumerable<TEnumerable> enumerable, Action<TEnumerable> action)
        {
            foreach (var item in enumerable)
            {
                action(item);
            }
        }
    }

[rasx][] answered 2018-12-26T10:26:25Z

29 votes

最简单的方法：

Directory.Delete(path,true);  
    Directory.CreateDirectory(path);

请注意，这可能会删除该文件夹的某些权限。

[Igor Mukhachev][] answered 2018-12-26T10:26:51Z

24 votes

基于hiteshbiblog，您可能应该确保该文件是可读写的。

private void ClearFolder(string FolderName)
    {
        DirectoryInfo dir = new DirectoryInfo(FolderName);
    
        foreach (FileInfo fi in dir.GetFiles())
        {
            fi.IsReadOnly = false;
            fi.Delete();
        }
    
        foreach (DirectoryInfo di in dir.GetDirectories())
        {
            ClearFolder(di.FullName);
            di.Delete();
        }
    }

如果您知道没有子文件夹，这样的事情可能是最简单的：

Directory.GetFiles(folderName).ForEach(File.Delete)

[zumalifeguard][] answered 2018-12-26T10:27:16Z

12 votes

System.IO.Directory.Delete(installPath, true);
    System.IO.Directory.CreateDirectory(installPath);

[MacGyver][] answered 2018-12-26T10:27:33Z

6 votes

我尝试过的每一种方法，在某些方面都出现了System.IO错误。 以下方法可以肯定，即使文件夹是空的，也可以是只读的，等等。

ProcessStartInfo Info = new ProcessStartInfo();  
    Info.Arguments = "/C rd /s /q \"C:\\MyFolder"";  
    Info.WindowStyle = ProcessWindowStyle.Hidden;  
    Info.CreateNoWindow = true;  
    Info.FileName = "cmd.exe";  
    Process.Start(Info);

[Alexandru Dicu][] answered 2018-12-26T10:27:56Z

6 votes

以下代码将清除目录，但保留根目录（递归）。

Action<string> DelPath = null;
    DelPath = p =>
    {
        Directory.EnumerateFiles(p).ToList().ForEach(File.Delete);
        Directory.EnumerateDirectories(p).ToList().ForEach(DelPath);
        Directory.EnumerateDirectories(p).ToList().ForEach(Directory.Delete);
    };
    DelPath(path);

[hofi][] answered 2018-12-26T10:28:16Z

4 votes

仅使用File和Directory而不是FileInfo和DirectoryInfo的静态方法将执行得更快。 （参见C＃中File和FileInfo有什么区别的接受答案？）。 答案显示为实用方法。

public static void Empty(string directory)
    {
        foreach(string fileToDelete in System.IO.Directory.GetFiles(directory))
        {
            System.IO.File.Delete(fileToDelete);
        }
        foreach(string subDirectoryToDeleteToDelete in System.IO.Directory.GetDirectories(directory))
        {
            System.IO.Directory.Delete(subDirectoryToDeleteToDelete, true);
        }
    }

[Kriil][] answered 2018-12-26T10:28:45Z

3 votes

在Windows 7中，如果您刚刚使用Windows资源管理器手动创建它，则目录结构与此类似：

C:
      \AAA
        \BBB
          \CCC
            \DDD

并且运行原始问题中建议的代码来清理目录C：\\ AAA，第`di.Delete(true)`行在尝试删除BBB时始终因IOException“目录不为空”而失败。 这可能是因为Windows资源管理器中存在某种延迟/缓存。

以下代码可靠地为我工作：

static void Main(string[] args)
    {
        DirectoryInfo di = new DirectoryInfo(@"c:\aaa");
        CleanDirectory(di);
    }
    
    private static void CleanDirectory(DirectoryInfo di)
    {
        if (di == null)
            return;
    
        foreach (FileSystemInfo fsEntry in di.GetFileSystemInfos())
        {
            CleanDirectory(fsEntry as DirectoryInfo);
            fsEntry.Delete();
        }
        WaitForDirectoryToBecomeEmpty(di);
    }
    
    private static void WaitForDirectoryToBecomeEmpty(DirectoryInfo di)
    {
        for (int i = 0; i < 5; i++)
        {
            if (di.GetFileSystemInfos().Length == 0)
                return;
            Console.WriteLine(di.FullName + i);
            Thread.Sleep(50 * i);
        }
    }

[farfareast][] answered 2018-12-26T10:29:24Z

3 votes

[Mong Zhu][] answered 2018-12-26T10:29:41Z

2 votes

string directoryPath = "C:\Temp";
    Directory.GetFiles(directoryPath).ToList().ForEach(File.Delete);
    Directory.GetDirectories(directoryPath).ToList().ForEach(Directory.Delete);

[AVH][] answered 2018-12-26T10:29:57Z

2 votes

此版本不使用递归调用，并解决了readonly问题。

public static void EmptyDirectory(string directory)
    {
        // First delete all the files, making sure they are not readonly
        var stackA = new Stack<DirectoryInfo>();
        stackA.Push(new DirectoryInfo(directory));
    
        var stackB = new Stack<DirectoryInfo>();
        while (stackA.Any())
        {
            var dir = stackA.Pop();
            foreach (var file in dir.GetFiles())
            {
                file.IsReadOnly = false;
                file.Delete();
            }
            foreach (var subDir in dir.GetDirectories())
            {
                stackA.Push(subDir);
                stackB.Push(subDir);
            }
        }
    
        // Then delete the sub directories depth first
        while (stackB.Any())
        {
            stackB.Pop().Delete();
        }
    }

[Jeppe Andreasen][] answered 2018-12-26T10:30:37Z

2 votes

这是我阅读所有帖子后结束的工具。确实如此

*  删除所有可删除的内容
 *  如果某些文件仍在文件夹中，则返回false

它处理

*  只读文件
 *  删除延迟
 *  锁定的文件

它不使用Directory.Delete，因为进程在异常时中止。

/// <summary>
        /// Attempt to empty the folder. Return false if it fails (locked files...).
        /// </summary>
        /// <param name="pathName"></param>
        /// <returns>true on success</returns>
        public static bool EmptyFolder(string pathName)
        {
            bool errors = false;
            DirectoryInfo dir = new DirectoryInfo(pathName);
    
            foreach (FileInfo fi in dir.EnumerateFiles())
            {
                try
                {
                    fi.IsReadOnly = false;
                    fi.Delete();
    
                    //Wait for the item to disapear (avoid 'dir not empty' error).
                    while (fi.Exists)
                    {
                        System.Threading.Thread.Sleep(10);
                        fi.Refresh();
                    }
                }
                catch (IOException e)
                {
                    Debug.WriteLine(e.Message);
                    errors = true;
                }
            }
    
            foreach (DirectoryInfo di in dir.EnumerateDirectories())
            {
                try
                {
                    EmptyFolder(di.FullName);
                    di.Delete();
    
                    //Wait for the item to disapear (avoid 'dir not empty' error).
                    while (di.Exists)
                    {
                        System.Threading.Thread.Sleep(10);
                        di.Refresh();
                    }
                }
                catch (IOException e)
                {
                    Debug.WriteLine(e.Message);
                    errors = true;
                }
            }
    
            return !errors;
        }

[Eric Bole-Feysot][] answered 2018-12-26T10:31:29Z

1 votes

使用DirectoryInfo的GetDirectories方法。

foreach (DirectoryInfo subDir in new DirectoryInfo(targetDir).GetDirectories())
                        subDir.Delete(true);

[Mr\_Hmp][Mr_Hmp] answered 2018-12-26T10:31:49Z

1 votes

以下示例显示了如何执行此操作。 它首先创建一些目录和一个文件，然后通过`Directory.Delete(topPath, true);`删除它们：

static void Main(string[] args)
        {
            string topPath = @"C:\NewDirectory";
            string subPath = @"C:\NewDirectory\NewSubDirectory";
    
            try
            {
                Directory.CreateDirectory(subPath);
    
                using (StreamWriter writer = File.CreateText(subPath + @"\example.txt"))
                {
                    writer.WriteLine("content added");
                }
    
                Directory.Delete(topPath, true);
    
                bool directoryExists = Directory.Exists(topPath);
    
                Console.WriteLine("top-level directory exists: " + directoryExists);
            }
            catch (Exception e)
            {
                Console.WriteLine("The process failed: {0}", e.Message);
            }
        }

它来自\[https://msdn.microsoft.com/en-us/library/fxeahc5f(v=vs.110).aspx。\]

[Salma Tofaily][] answered 2018-12-26T10:32:14Z

1 votes

这不是处理上述问题的最佳方式。 但它是另一种......

while (Directory.GetDirectories(dirpath).Length > 0)
     {
           //Delete all files in directory
           while (Directory.GetFiles(Directory.GetDirectories(dirpath)[0]).Length > 0)
           {
                File.Delete(Directory.GetFiles(dirpath)[0]);
           }
           Directory.Delete(Directory.GetDirectories(dirpath)[0]);
     }

[dsmyrnaios][] answered 2018-12-26T10:32:44Z

0 votes

DirectoryInfo Folder = new DirectoryInfo(Server.MapPath(path)); 
    if (Folder .Exists)
    {
        foreach (FileInfo fl in Folder .GetFiles())
        {
            fl.Delete();
        }
    
        Folder .Delete();
    }

[Ashok Luhach][] answered 2018-12-26T10:33:01Z

0 votes

using System;
    using System.IO;
    namespace DeleteFoldersAndFilesInDirectory
    {
         class Program
         {
              public static void DeleteAll(string path)
              {
                   string[] directories = Directory.GetDirectories(path);
                   string[] files = Directory.GetFiles(path);
                   foreach (string x in directories)
                        Directory.Delete(x, true);
                   foreach (string x in files)
                        File.Delete(x);
              }
              static void Main()
              {
                   Console.WriteLine("Enter The Directory:");
                   string directory = Console.ReadLine();
                   Console.WriteLine("Deleting all files and directories ...");
                   DeleteAll(directory);
                   Console.WriteLine("Deleted");
              }
         }
    }

[Diaa Eddin][] answered 2018-12-26T10:33:17Z

0 votes

这将显示我们如何删除文件夹并检查它我们使用文本框

using System.IO;
    namespace delete_the_folder
    {
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
    
        private void Deletebt_Click(object sender, EventArgs e)
        {
            //the  first you should write the folder place
            if (Pathfolder.Text=="")
            {
                MessageBox.Show("ples write the path of the folder");
                Pathfolder.Select();
                //return;
            }
    
            FileAttributes attr = File.GetAttributes(@Pathfolder.Text);
    
            if (attr.HasFlag(FileAttributes.Directory))
                MessageBox.Show("Its a directory");
            else
                MessageBox.Show("Its a file");
    
            string path = Pathfolder.Text;
            FileInfo myfileinf = new FileInfo(path);
            myfileinf.Delete();
    
        }
    
    
    }
    
    }

[Abdelrhman Khalil][] answered 2018-12-26T10:34:11Z

0 votes

using System.IO;
    
    string[] filePaths = Directory.GetFiles(@"c:\MyDir\");
    
    foreach (string filePath in filePaths)
    
    File.Delete(filePath);

[SynsMasTer][] answered 2018-12-26T10:34:26Z

0 votes

从主要电话

static void Main(string[] args)
    { 
       string Filepathe =<Your path>
       DeleteDirectory(System.IO.Directory.GetParent(Filepathe).FullName);              
    }

添加此方法

public static void DeleteDirectory(string path)
    {
        if (Directory.Exists(path))
        {
            //Delete all files from the Directory
            foreach (string file in Directory.GetFiles(path))
            {
                File.Delete(file);
            }
            //Delete all child Directories
            foreach (string directory in Directory.GetDirectories(path))
            {
                 DeleteDirectory(directory);
            }
            //Delete a Directory
            Directory.Delete(path);
        }
     }

[sansalk][] answered 2018-12-26T10:34:51Z

0 votes

foreach (string file in System.IO.Directory.GetFiles(path))
     {
        System.IO.File.Delete(file);
     }
    
     foreach (string subDirectory in System.IO.Directory.GetDirectories(path))
     {
         System.IO.Directory.Delete(subDirectory,true); 
     }

[Manish Y][] answered 2018-12-26T10:35:06Z

0 votes

要删除文件夹，这是使用文本框和按钮`using System.IO;`的代码：

private void Deletebt_Click(object sender, EventArgs e)
    {
        System.IO.DirectoryInfo myDirInfo = new DirectoryInfo(@"" + delete.Text);
    
        foreach (FileInfo file in myDirInfo.GetFiles())
        {
           file.Delete();
        }
        foreach (DirectoryInfo dir in myDirInfo.GetDirectories())
        {
           dir.Delete(true);
        }
    }

[Abdelrhman Khalil][] answered 2018-12-26T10:35:26Z

\-2 votes

private void ClearDirectory(string path)
    {
        if (Directory.Exists(path))//if folder exists
        {
            Directory.Delete(path, true);//recursive delete (all subdirs, files)
        }
        Directory.CreateDirectory(path);//creates empty directory
    }

[dadziu][] answered 2018-12-26T10:35:42Z

\-3 votes

您应该做的唯一事情是将`Directory.Delete("C:\MyDummyDirectory", True)`设置为`True`。

`Directory.Delete("C:\MyDummyDirectory", True)`

感谢.NET。:)

[LysanderM][] answered 2018-12-26T10:36:10Z

\-4 votes

IO.Directory.Delete(HttpContext.Current.Server.MapPath(path), True)

你不需要更多

转载：[c＃ - 如何删除目录中的所有文件和文件夹？ - ITranslater][c_ - _ - ITranslater]

[gsharp]: https://stackoverflow.com/users/150967/gsharp
[Adam Robinson]: https://stackoverflow.com/users/82187/adam-robinson
[hiteshbiblog]: https://stackoverflow.com/users/332539/hiteshbiblog
[Thulasiram]: https://stackoverflow.com/users/1085778/thulasiram
[rasx]: https://stackoverflow.com/users/22944/rasx
[Igor Mukhachev]: https://stackoverflow.com/users/4760738/igor-mukhachev
[zumalifeguard]: https://stackoverflow.com/users/75129/zumalifeguard
[MacGyver]: https://stackoverflow.com/users/640205/macgyver
[Alexandru Dicu]: https://stackoverflow.com/users/1140388/alexandru-dicu
[hofi]: https://stackoverflow.com/users/3793728/hofi
[Kriil]: https://stackoverflow.com/users/2070222/kriil
[farfareast]: https://stackoverflow.com/users/391693/farfareast
[Mong Zhu]: https://stackoverflow.com/users/5174469/mong-zhu
[AVH]: https://stackoverflow.com/users/262140/avh
[Jeppe Andreasen]: https://stackoverflow.com/users/5479187/jeppe-andreasen
[Eric Bole-Feysot]: https://stackoverflow.com/users/616274/eric-bole-feysot
[Mr_Hmp]: https://stackoverflow.com/users/1163428/mr-hmp
[Salma Tofaily]: https://stackoverflow.com/users/6615353/salma-tofaily
[dsmyrnaios]: https://stackoverflow.com/users/4373521/dsmyrnaios
[Ashok Luhach]: https://stackoverflow.com/users/2147897/ashok-luhach
[Diaa Eddin]: https://stackoverflow.com/users/3551086/diaa-eddin
[Abdelrhman Khalil]: https://stackoverflow.com/users/4986216/abdelrhman-khalil
[SynsMasTer]: https://stackoverflow.com/users/2612735/synsmaster
[sansalk]: https://stackoverflow.com/users/1403070/sansalk
[Manish Y]: https://stackoverflow.com/users/1677174/manish-y
[dadziu]: https://stackoverflow.com/users/3296251/dadziu
[LysanderM]: https://stackoverflow.com/users/1047499/lysanderm
[c_ - _ - ITranslater]: https://www.itranslater.com/qa/details/2098485362564793344