C# 在C中添加递归命令以设置子目录权限#

我想向这个脚本添加一个递归命令，允许它循环当前目录下的子目录/文件，并将子文件夹/文件的权限设置为我想要的任何权限。这里是我到目前为止所拥有的，它允许更改第一组子目录的权限。显然，我可以添加samecode来继续深入查看文件夹结构，但不是每个根文件夹中都有相同数量的子文件夹。我想添加递归命令来循环遍历所有子目录，当没有更多子目录时，移动到下一个根文件夹

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;
using System.Security.AccessControl;
using System.Management;
using System.Management.Instrumentation;

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

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void selectDirectoryBtn_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog myFolderBrowserDialog = new FolderBrowserDialog();
            myFolderBrowserDialog.ShowDialog();
            selectedDirBox.Text = myFolderBrowserDialog.SelectedPath.ToString();

            try
            {
                DirectoryInfo myDirectoryInfo = new DirectoryInfo(selectedDirBox.Text);
                foreach (DirectoryInfo currentDir in myDirectoryInfo.GetDirectories())
                {

                    toolStripStatusLabel1.Text = currentDir.Name;
                    DirectorySecurity DirSecurity = currentDir.GetAccessControl();
                    DirSecurity.AddAccessRule(new FileSystemAccessRule(“Whatever permissions group I choose”, FileSystemRights.CreateFiles, AccessControlType.Allow));                
                    currentDir.SetAccessControl(DirSecurity);

                    // Step thru each file within current Directory and assign access
                    foreach (FileInfo currentFile in currentDir.GetFiles())
                    {
                        FileSecurity fileSecurity = currentFile.GetAccessControl();
                        fileSecurity.AddAccessRule(new FileSystemAccessRule("Whatever permissions group I choose", FileSystemRights.FullControl, AccessControlType.Allow));
                        currentFile.SetAccessControl(fileSecurity);
                    }

                    foreach (DirectoryInfo subDir in currentDir.GetDirectories ())
                    {


                        toolStripStatusLabel1.Text = currentDir.Name + "/" + subDir.Name;
                        DirectorySecurity allsubDirSecurity = subDir.GetAccessControl();
                        allsubDirSecurity.AddAccessRule(new FileSystemAccessRule("Whatever permissions group I choose ", FileSystemRights.FullControl, AccessControlType.Allow));
                        subDir.SetAccessControl(allsubDirSecurity);

                        // Step thru each file within current SubDirectory and assign access
                        foreach (FileInfo currentFile in subDir.GetFiles())
                        {
                            FileSecurity fileSecurity = currentFile.GetAccessControl();
                            fileSecurity.AddAccessRule(new FileSystemAccessRule("Whatever permissions group I choose", FileSystemRights.FullControl, AccessControlType.Allow));
                            currentFile.SetAccessControl(fileSecurity);
                        }
                    }
                }

                labelFinished.Text = "Completed Successfully";
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message + "/////////////////" + ex.StackTrace);
            }
        }
    }
}

---

首先，如果您的目标框架是4.0，建议您使用Directory.EnumerateFiles方法（您还可以找到第三个执行相同操作的代码）

假设这是不可行的，您可以通过使用yield关键字简化递归处理，例如，基于yield生成一个遍历方法——我用一个过滤器函数向您展示了这一点，因为它在目录遍历中通常很有用，ad应该会给您一些想法

static IEnumerable<string> traverse(string path, Func<string, bool> filter)
{
    foreach (string f in Directory.GetFiles(path).Where(filter))
    {
        yield return f;
    }

    foreach (string d in Directory.GetDirectories(path))
    {
        foreach (string f in traverse(d, filter))
        {
            yield return f;
        }
    }
}

您将拥有一个更易于重用的目录遍历。我知道我不会在上面的代码段中生成目录，但是如果我想同时处理文件和目录，我会基于DirectoryInfo.GetFileSystemInfos方法

我忘了什么时候添加了产量特性，但它已经有相当一段时间了

var files = traverse(PATH, WHERE);
foreach (string f in files) { DoWhatever; }