以编程方式格式化USB驱动器

Question

我正在用C#开发一个应用程序，这样，如果用户确认消息框要格式化从组合框列表中选择的USB驱动器，驱动器将被格式化。

然而，我不知道如何处理这个问题--我有以下代码：

 public static bool FormatDrive(string driveLetter,
    string fileSystem = "FAT", bool quickFormat = false,
    int clusterSize = 4096, string label = "", bool enableCompression = false)
    {
        if (driveLetter.Length != 2 || driveLetter[1] != ':' || !char.IsLetter(driveLetter[0]))
            return false;

        //query and format given drive         
        ManagementObjectSearcher searcher = new ManagementObjectSearcher
         (@"select * from Win32_Volume WHERE DriveLetter = '" + driveLetter + "'");
        foreach (ManagementObject vi in searcher.Get())
        {
            vi.InvokeMethod("Format", new object[] { fileSystem, quickFormat, clusterSize, label, enableCompression });
        }

        return true;
    } 

我不太确定this是如何工作的。这是格式化USB驱动器的正确方法吗？如果没有，有人能给我指个方向吗？

我试着研究过Win32_Volume类，但我还是不太理解它是如何工作的。This问题建议使用CreateFile函数。我也看过this的网站。

任何将我推向正确方向的技巧，都将不胜感激。

Answer 1

好吧，也许我有另一种方法：

    public static bool FormatDrive_CommandLine(char driveLetter, string label = "", string fileSystem = "NTFS", bool quickFormat = true, bool enableCompression = false, int? clusterSize = null)
    {
        #region args check

        if (!Char.IsLetter(driveLetter) ||
            !IsFileSystemValid(fileSystem))
        {
            return false;
        }

        #endregion
        bool success = false;
        string drive = driveLetter + ":";
        try
        {
            var di                     = new DriveInfo(drive);
            var psi                    = new ProcessStartInfo();
            psi.FileName               = "format.com";
            psi.CreateNoWindow         = true; //if you want to hide the window
            psi.WorkingDirectory       = Environment.SystemDirectory;
            psi.Arguments              = "/FS:" + fileSystem +
                                         " /Y" +
                                         " /V:" + label +
                                         (quickFormat ? " /Q" : "") +
                                         ((fileSystem == "NTFS" && enableCompression) ? " /C" : "") +
                                         (clusterSize.HasValue ? " /A:" + clusterSize.Value : "") +
                                         " " + drive;
            psi.UseShellExecute        = false;
            psi.CreateNoWindow         = true;
            psi.RedirectStandardOutput = true;
            psi.RedirectStandardInput  = true;
            var formatProcess          = Process.Start(psi);
            var swStandardInput        = formatProcess.StandardInput;
            swStandardInput.WriteLine();
            formatProcess.WaitForExit();
            success = true;
        }
        catch (Exception) { }
        return success;
    }

首先我自己写了代码，现在在http://www.metasharp.net/index.php/Format_a_Hard_Drive_in_Csharp上找到了一个完美的方法

评论中的问题答案：

如果不想让/q快速格式化，请将其移除

如果需要，/x参数会强制卸载所选的卷。

来源：http://ccm.net/faq/9524-windows-how-to-format-a-usb-key-from-the-command-prompt

psi.CreateNoWindow = true;

隐藏终端，使您的应用程序看起来很流畅。我的建议是在调试时显示它。

您要调用的是驱动器为F:/的情况，例如：

FormatDrive_CommandLine('F', "formattedDrive", "FAT32", false, false);

Answer 2

我也尝试过了，并取得了成效：

public bool FormatUSB(string driveLetter, string fileSystem = "FAT32", bool quickFormat = true,
                                   int clusterSize = 4096, string label = "USB_0000", bool enableCompression = false)
    {
        //add logic to format Usb drive
        //verify conditions for the letter format: driveLetter[0] must be letter. driveLetter[1] must be ":" and all the characters mustn't be more than 2
        if (driveLetter.Length != 2 || driveLetter[1] != ':' || !char.IsLetter(driveLetter[0]))
            return false;

        //query and format given drive 
        //best option is to use ManagementObjectSearcher

        var files = Directory.GetFiles(driveLetter);
        var directories = Directory.GetDirectories(driveLetter);

        foreach (var item in files)
        {
            try
            {
                File.Delete(item);
            }
            catch (UnauthorizedAccessException) { }
            catch (IOException) { }
        }

        foreach (var item in directories)
        {
            try
            {
                Directory.Delete(item);
            }
            catch (UnauthorizedAccessException) { }
            catch (IOException) { }
        }

        ManagementObjectSearcher searcher = new ManagementObjectSearcher(@"select * from Win32_Volume WHERE DriveLetter = '" + driveLetter + "'");
        foreach (ManagementObject vi in searcher.Get())
        {
            try
            {
                var completed = false;
                var watcher = new ManagementOperationObserver();

                watcher.Completed += (sender, args) =>
                {
                    Console.WriteLine("USB format completed " + args.Status);
                    completed = true;
                };
                watcher.Progress += (sender, args) =>
                {
                    Console.WriteLine("USB format in progress " + args.Current);
                };

                vi.InvokeMethod(watcher, "Format", new object[] { fileSystem, quickFormat, clusterSize, label, enableCompression });

                while (!completed) { System.Threading.Thread.Sleep(1000); }


            }
            catch
            {

            }
        }
        return true;
    }
    #endregion

也许这会有所帮助。