.net - NET WebBrowser控件上的Javascript Window.Opener对象为null新窗口

好吧，我在.NET Framework的WebBroswer控件中弹出了一个窗口，该窗口是通过NewWindow事件处理程序捕获的，就像这样。

WebBrowser w = new WebBrowser();
SHDocVw.WebBrowser_V1 web = (SHDocVw.WebBrowser_V1)w.ActiveXInstance;
web.NewWindow += new SHDocVw.DWebBrowserEvents_NewWindowEventHandler(web_NewWindow);

新的Popup带有WebBrowser控件的新实例的新形式。

void web_NewWindow(string URL, int Flags, string TargetFrameName, ref object PostData, string Headers, ref bool Processed)
    {
        Processed = true;
        WebBrowser w2 = new WebBrowser();

        Form PopUp = new Form();
        PopUp.Controls.Clear();
        PopUp.Controls.Add(w2);
        w2.Dock = DockStyle.Fill;
        PopUp.Show();
        w2.Navigate(URL);
        w2.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(w2_DocumentCompleted);
    }

我的问题是Window.Opener对象在该过程中为null。

页面使用该字段将用户返回到原始窗口，并在表单上填写一些值。

无论如何，是否要将Window.Opener对象从一个WebBrowser控件传递到下一个？看来这行不通，但我必须尝试。

谢谢

最佳答案

是的，有一种方法可以将Window.Opener对象从一个WebBrowser控件传递到下一个。
有关详细信息，请参见下面的代码。

public class WebBrowserTest
{
    private WebBrowser _wParent;

    // entry point
    public void Navigate(string url)
    {
        _wParent = new WebBrowser();
        SHDocVw.WebBrowser_V1 v1 = (SHDocVw.WebBrowser_V1)w.ActiveXInstance;
        v1.NewWindow += v1_NewWindow;
    }

    private void v1_NewWindow(string URL, int Flags, string TargetFrameName, ref object PostData, string Headers, ref bool Processed)
    {
        // tell, that we'll open new page by ourselves
        Processed = true;

        // open page by ourselves
        WebBrowser w2 = new WebBrowser();
        w2.Navigate(url);

        // wait for document will be loaded to do some magic stuff then
        w2.DocumentCompleted += w2_DocumentCompleted;
    }

    // sets opener for popup window
    // after document in popup window was loaded
    private void w2_DocumentCompleted(object sender, EventArgs e)
    {
        WebBrowser popup = (WebBrowser)sender;
        SetOpener(_wparent, popup);
    }

    // My most favorite method :)
    // Contains exactly that hack, we're talking about
    private void SetOpener(WebBrowser opener, WebBrowser popup)
    {
        HtmlWindow htmlPopup = popup.Document.Window;
        HtmlWindow htmlOpener = opener.Document.Window;

        // let the dark magic begin

        // actually, WebBrowser control is .NET wrapper around IE COM interfaces
        // we can get a bit closer to them access by getting reference to
        // "mshtml.IHTMLWindow2" field via Reflection
        FieldInfo fi = htmlPopup.GetType().GetField("htmlWindow2", BindingFlags.Instance | BindingFlags.NonPublic);

        mshtml.IHTMLWindow2 htmlPopup2 = (mshtml.IHTMLWindow2)fi.GetValue(htmlPopup);
        mshtml.IHTMLWindow2 htmlOpener2 = (mshtml.IHTMLWindow2)fi.GetValue(htmlOpener);

        // opener is set here
        htmlPopup2.window.opener = htmlOpener2.window.self;
    }
}

p.s.我了解，仍然很实际的机会很小，但是无论如何=)

关于.net - NET WebBrowser控件上的Javascript Window.Opener对象为null新窗口，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/1051358/