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Editorial Team
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Asked: 2026-05-23T14:39:55+00:00

Does anyone know why I am getting (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME)) when attempting

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Does anyone know why I am getting (Exception from HRESULT: 0x80020006 (DISP_E_UNKNOWNNAME)) when attempting to invoke a javascript function in a WPF application (.Net 4)?

The browser control is hosted inside an application and is being used with local html files, e.g:

C:\Users\XXXX\AppData\Roaming\XXXX\Books\XXXX_revision_1_1\html\1\med-9780198569244-chapter-4

This file has a javascript include – ‘script/scripts.js’

Is it possible from C# to execute a javascript function using the InvokeScript method on the browser control when url is a local file?

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1 Answer

  1. Editorial Team

    The simple answer was, I was calling it to early, it has to be after the page has loaded.

    as stated in MSDN – http://msdn.microsoft.com/en-us/library/cc491132.aspx

    ‘InvokeScript(String) should not be called before the document that implements it has finished loading. You can detect when a document has finished loading by handling the LoadCompleted event.’

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