C＃Webbrowser控件键盘按下不触发

Question

I have a System.Windows.Forms webbrowser control that is not firing the keydown events.

Here is the code: the mouse down event fires, but the keydown event does not. Are there any criteria for the keydown event triggering?

IWebBrowser2 browser;
        mshtml.HTMLDocument doc;
        mshtml.HTMLDocumentEvents2_Event iEvent;

        browser = (IWebBrowser2)_browser.ActiveXInstance;

        if (browser == null)
            return;

        doc = (HTMLDocument)browser.Document;

        if (doc == null)
            return;

        iEvent = (HTMLDocumentEvents2_Event)doc;

        if (iEvent != null)
        {
            iEvent.onkeydown += new mshtml.HTMLDocumentEvents2_onkeydownEventHandler(keyDown);
            iEvent.onmousedown += new HTMLDocumentEvents2_onmousedownEventHandler(iEvent_onmousedown);
        }
    }

Answer 1

Try using PreviewKeyDown event instead of KeyDown . Since PreviewKeyDown fires before KeyDown event.

Check this link for more information on how to bind this event.

Hope this helps