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我目前正在创建一个命名空间扩展。所以我想在计算机中创建一个条目，并让 explorer.exe 调用我的 IShellFolder 实现。我让它工作了几分钟（我愚蠢地决定在提交之前清理代码），所以我就在附近。

但我注意到一些非常奇怪的事情：更改 Class 的 GUID 值会改变我在 explorer.exe 中看到的内容

我发现那个问题告诉我我没有做坏事

这是代码：

装配信息.cs：

[assembly: ComVisible(false)]
[assembly: Guid("007C5100-4251-47BE-8141-D2AD3F496E6A")]

根文件夹.cs：

[ClassInterface(ClassInterfaceType.None)
[Guid("007C5101-4251-47BE-8141-D2AD3F496E6A"), ComVisible(true)]
public class RootFolder : IShellFolder, IShellFolder2, IPersistFolder, IPersistFolder2 {
    private const String _mountPoint = "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\MyComputer\\NameSpace\\{0}";
    private const String _mountName = "CLSID\\{0}";

    #region Shell Extension Registration
    [ComRegisterFunction()]
    public static void Register(Type t)
    {
        Console.WriteLine("Registering {0}...", t.GUID);
        try {
            if (t.GUID == null)
                throw new ArgumentException("CLSID must not be null");
            using (RegistryKey key = Registry.CurrentUser.CreateSubKey(String.Format(_mountPoint, t.GUID.ToString("B")))) {
                key.SetValue(null, "RootFolder");
            }
            using (RegistryKey key = Registry.ClassesRoot.OpenSubKey(String.Format(_mountName, t.GUID.ToString("B")), true)) {
                key.SetValue(null, "RootFolder");
                using (RegistryKey shFolder = key.CreateSubKey("ShellFolder")) {
                    shFolder.SetValue("Attributes", 0x78000040);
                    shFolder.SetValue("WantsFORPARSING", "");
                }
            }
            using (RegistryKey key = Registry.LocalMachine.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved")) {
                key.SetValue(t.GUID.ToString("B"), "RootFolder");
            }
            IntPtr pidl = NativeMethod.SHGetKnownFolderIDList(KnownFolder.ComputerFolder.clsid, 0, IntPtr.Zero);
            NativeMethod.SHChangeNotify(NativeMethod.FSNotification.UpdateDir, NativeMethod.ItemMeaning.IDList, pidl, IntPtr.Zero);
        } catch (Exception ex) {
            Logger.Write(Logger.Severity.Fatal, "Registration error: {0}", ex.Message);
            throw;  // Re-throw the exception
        }
    }

    [ComUnregisterFunction()]
    public static void Unregister(Type t)
    {
        try {
            if (t.GUID == null)
                throw new ArgumentException("CLSID must not be null");
            Registry.CurrentUser.DeleteSubKey(String.Format(_mountPoint, t.GUID.ToString("B")), false);
            using (RegistryKey k = Registry.ClassesRoot.OpenSubKey(String.Format(_mountName, t.GUID.ToString("B")), true)) {
                if (k != null)
                    k.DeleteSubKey("ShellFolder");
            }
            using (RegistryKey key = Registry.LocalMachine.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved")) {
                if (key != null)
                    key.DeleteValue(t.GUID.ToString("B"), false);
            }

            IntPtr pidl = NativeMethod.SHGetKnownFolderIDList(KnownFolder.ComputerFolder.clsid, 0, IntPtr.Zero);
            NativeMethod.SHChangeNotify(NativeMethod.FSNotification.UpdateDir, NativeMethod.ItemMeaning.IDList, pidl, IntPtr.Zero);
        } catch (Exception ex) {
            Logger.Write(Logger.Severity.Critical, "Registration error: {0}", ex.Message);
            throw;  // Re-throw the exception
        }
    }
    #endregion


    #region IShellFolder2 Inheritance
    [All the methods looks like that, this is just a test]
    public IEnumIDList EnumObjects(IntPtr hwndOwner, EnumObject flags)
    {
        Logger.Write("Tracing....");
        throw new NotImplementedException();
    }
    #endregion

    #region IPersistFolder2 Inheritance
    [Ditto]
    #endregion
}

我的 GUID 使用范围 007C5{100...120}-4251-47BE-8141-D2AD3F496E6A 当我的扩展程序的 GUID 为 007C5101 时，它只显示没有任何属性的“RootFolder”。当它有 007C5100（与程序集相同）或 007C5102 或 007C5103 时，它显示为“系统文件夹”（即使它不调用我的 DLL）。我对这种行为有点困惑，改变 GUID 怎么会导致这种变化？

注意：我在注册表中搜索了 4251-47BE-8141-D2AD3F496E6A（我的 GUID 的不可变部分），但在取消注册后找不到任何内容。

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