C#调用Word的COM组件提示库没注册

Question

软件环境：Win10系统+office 2010

详细异常信息：

Unable to cast COM object of type 'Microsoft.Office.Interop.Word.ApplicationClass' to interface type 'Microsoft.Office.Interop.Word._Application'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{00020970-0000-0000-C000-000000000046}' failed due to the following error: 库没有注册。 (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)).

注册表信息：

HKEY_CLASSES_ROOT\Interface\[00020970-0000-0000-C000-000000000046]\TypeLib  为 8.5

HKEY_CLASSES_ROOT\WOW6432Node\TypeLib\00020905-0000-0000-C000-000000000046  为 8.5

Answer 1

Hi,

欢迎在MSDN论坛发帖。

这个问题一般是由于不正确的COM Interop settings 导致，这可能由于安装了新版本的windows office，然后又安装旧版本的office。

对于这个问题，你可以尝试修复office 版本，关于详细的修复步走，你可以看下面这个链接。

我还发现相似的解决方案，希望对你有用。

https://answers.microsoft.com/en-us/office/forum/office_2010-word/unable-to-cast-com-object-of-type/34efcd57-e819-4a83-9cdd-501ab15b0971

因为你的问题涉及到office 的开发使用问题，我建议你去 office 论坛发帖。

Best Regards,

Hart

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Answer 2

重新安装VSTO 2010

https://www.microsoft.com/en-us/download/details.aspx?id=48217

Visual Studio 2010 Tools for Office Runtime

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