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Editorial Team
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Asked: 2026-05-27T18:18:27+00:00

Is there a way to track error messages in a webBrowser control? For example,

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Is there a way to track error messages in a webBrowser control? For example, in Firefox or Internet Explorer, I can look at the console output for Javascript errors. Is there a way to track those errors from within the application?

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  1. Editorial Team

    There are two related Microsoft KB articles:

    Although these are related to unmanaged C++ code, you should be able to adopt these for the C# web browser control, too.

    Another article suggests to subscribe to the onerror event:

    m_htmlDoc = (IHTMLDocument2)axWebBrowser1.Document;
HTMLWindowEvents2_Event onErrorEvent;
onErrorEvent = (HTMLWindowEvents2_Event)m_htmlDoc.parentWindow;
onErrorEvent.onerror += new
HTMLWindowEvents2_onerrorEventHandler(myHTMLWindowEvents2_onerror);

    And finally, there is a similar SO posting related to Delphi.

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