为何有时WebBrowser.Dispose（）推出的Internet Explorer？ [英] Why is sometimes WebBrowser.Dispose() launching Internet Explorer?

问题描述

当我做下面的（其实我重复同样的整个code有不同的网页）：

When I do the following (Actually I repeat the same whole code with different web pages):

        Navigator nav;
        nav = new Navigator();
        nav.Browser.Navigate("http://www.amazon.com/gp/search/ref=sr_adv_b/?search-alias=stripbooks&unfiltered=1&field-keywords=&field-author=&field-title=&field-isbn=0471848573+&field-publisher=&node=&field-p_n_condition-type=&field-feature_browse-bin=&field-binding_browse-bin=&field-subject=&field-language=&field-dateop=&field-datemod=&field-dateyear=&sort=relevanceexprank&Adv-Srch-Books-Submit.x=18&Adv-Srch-Books-Submit.y=4");
        while (nav.Browser.ReadyState != WebBrowserReadyState.Complete) Application.DoEvents();
        nav.Dispose();

Navigator是一个包含公共web浏览器表单，就是这样。您可以自己测试它和我想的一样会发生，但它不会发生每一次。您可能需要把它放在一个循环，并重复了几次的问题发生。

Navigator is a Form that contains a public WebBrowser and that's it. You can test it yourself and I think the same will happen, but it doesn't happen every single time. You might need to put it in a loop and repeat it a few times for the problem to happen.

推荐答案

请您浏览器的形式是这样的：

Make your Navigator form look like this:

public partial class Navigator : Form {
    private bool done;

    public Navigator() {
        InitializeComponent();
        Browser.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(Browser_DocumentCompleted);
    }
    void Browser_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) {
        if (e.Url == Browser.Url) done = true;
    }
    public bool Completed {
        get { return done; }
    }
}

和你的循环是这样的：

        Navigator nav;
        nav = new Navigator();
        nav.Browser.Navigate("http://www.amazon.com/gp/search/ref=sr_adv_b/?search-alias=stripbooks&unfiltered=1&field-keywords=&field-author=&field-title=&field-isbn=0471848573+&field-publisher=&node=&field-p_n_condition-type=&field-feature_browse-bin=&field-binding_browse-bin=&field-subject=&field-language=&field-dateop=&field-datemod=&field-dateyear=&sort=relevanceexprank&Adv-Srch-Books-Submit.x=18&Adv-Srch-Books-Submit.y=4"); //        http://msn.com"); //stackoverflow.com/questions/3661536/while-true-application-doevents-doesnt-know-when-the-program-finishes");
        this.Enabled = false;
        while (!nav.Completed) Application.DoEvents();
        this.Enabled = true;
        nav.Dispose();

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