Exception from HRESULT: 0x80040111 (CLASS_E_CLASSNOTAVAILABLE)

Question

Using .Net 4.0 / WPF Application / C#

I have the following piece of code in my application, which opens a FileDialog when the Select button is clicked.

OpenFileDialog fdgSelectFile;
bool? dialogResult;

try
{
    fdgSelectFile = new OpenFileDialog {DefaultExt = FileDialogDefaultExt, Filter = FileDialogFilter};
    dialogResult = fdgSelectFile.ShowDialog();
    if (dialogResult.HasValue && dialogResult.Value)
    {
        SelectedFilePath = fdgSelectFile.FileName;
        // do your stuff
    }
}

This piece of code works in other machines, but not in my machine. It just throws an exception - as below - when the Select button is clicked upon.

2015-04-28 14:33:47,453 [1] ERROR XXXX.XXXX.XXXX.ViewModels.UploadViewModel - SelectFile - System.Runtime.InteropServices.COMException (0x80040111): Creating an instance of the COM component with CLSID {DC1C5A9C-E88A-4DDE-A5A1-60F82A20AEF7} from the IClassFactory failed due to the following error: 80040111 ClassFactory cannot supply requested class (Exception from HRESULT: 0x80040111 (CLASS_E_CLASSNOTAVAILABLE)).
   at System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
   at System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
   at System.Activator.CreateInstance(Type type, Boolean nonPublic)
   at System.Activator.CreateInstance(Type type)
   at Microsoft.Win32.OpenFileDialog.CreateVistaDialog()
   at Microsoft.Win32.FileDialog.RunVistaDialog(IntPtr hwndOwner)
   at Microsoft.Win32.FileDialog.RunDialog(IntPtr hwndOwner)
   at Microsoft.Win32.CommonDialog.ShowDialog()
   at XXXX.XXXX.XXXX.ViewModels.UploadViewModel.SelectFile(Object param) in c:\XXXX\XXXX\Client\XXXX.XXXX.XXXX\ViewModels\UploadViewModel .cs:line 176

---

Finding out the error is caused by comdlg32.dll from Microsoft.Win32 namespace, inside PresentationFramework.dll assembly, I queried the Registry for this CLS ID

reg query HKCR\CLSID | find /i "{DC1C5A9C-E88A-4DDE-A5A1-60F82A20AEF7}"

and here is what it says

HKEY_CLASSES_ROOT\CLSID{DC1C5A9C-E88A-4dde-A5A1-60F82A20AEF7}

---

I have also tried the following

1. As per this SO Post, I tried to register the dll, but it came back saying

   [Window Title] RegSvr32

   [Content] The module "comdlg32.dll" was loaded but the entry-point DllRegisterServer was not found.

   Make sure that "comdlg32.dll" is a valid DLL or OCX file and then try again.

   [OK]

2. As per this SO Post, I tried changing the Permissions, but no luck

---

Is there any way this can be resolved apart from re-imaging the machine or re-installing Windows?

If this helps : I have .Net FrameWork v3.5/ v4.0 / v4.5.1 & v4.5.2 installed in my machine and the PresentationFramework.dll is available in all locations inside the folders

v3.5   : C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v3.5\Profile\Client
v4.0   : C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.0
v4.5   : C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5
v4.5.1 : C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.1
v4.5.2 : C:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5.2

Answer 1

排除 Windows 安装损坏的可能性，这实际上是一个相当隐蔽的问题，由 Windows 7 及更高版本中关闭“Visual Themes”引起。

要重现它，您可以使用一个有效的 WPF 应用程序并修改它的兼容性设置（在 Windows 资源管理器中右键单击 .exe，然后选择首选项并从兼容性选项卡中，选中“禁用视觉主题”）。然后，尝试运行该应用程序，当您尝试显示 OpenFileDialog 或 SaveFileDialog 时，您会注意到它开始崩溃。

视觉主题也可以在操作系统级别关闭（例如，当使用高对比度主题时），它们通常在终端服务会话中关闭，或者在通过 WebEx 或其他一些桌面共享应用程序共享桌面时关闭。

不幸的是，我还没有解决方案，但根据阅读 MSDN，微软似乎在说，当桌面组合和视觉主题关闭时，您应该“提供替代代码路径”——不管这意味着什么。

在内部，OpenFileDialog 的实现有一个方法，该方法尝试初始化打开文件对话框 COM 控件的实例，该实例在 Visual Themes 关闭时失败

[SecurityCritical, SecurityTreatAsSafe]
internal override IFileDialog CreateVistaDialog()
{
    new SecurityPermission(PermissionState.Unrestricted).Assert();
    return (IFileDialog) Activator.CreateInstance(Type.GetTypeFromCLSID(new Guid("DC1C5A9C-E88A-4dde-A5A1-60F82A20AEF7")));
}