取消“您确定要离开此页面吗".NET 浏览器控件中的弹出窗口 [英] Supress the "are you sure you want to leave this page" popup in the .NET webbrowser control

问题描述

我有一个用 WinForms C# 编写的 Web 浏览器自动化项目.在导航过程中，浏览器会执行您确定要离开此页面吗?"的位置.弹出.我们需要这个弹出窗口，所以我无法从网站代码中删除它，这意味着我必须在我的自动化应用中覆盖它.

I have a web browser automation project written in WinForms C#. During the navigation there is a point where the browser does the "are you sure you want to leave this page?" popup. We need this popup, so I cannot remove it from the website code, which means I have to override it in my automation app.

有人知道如何做到这一点吗?

Does anyone have an idea how to do this?

推荐答案

这是一个顺利的解决方案..

and here was the smooth solution..

添加对mshtml的引用并使用mshtml添加；

add a reference to mshtml and add using mshtml;

Browser.Navigated += 
    new WebBrowserNavigatedEventHandler( 
        (object sender, WebBrowserNavigatedEventArgs args) => { 
            Action<HtmlDocument> blockAlerts = (HtmlDocument d) => { 
                HtmlElement h = d.GetElementsByTagName("head")[0]; 
                HtmlElement s = d.CreateElement("script"); 
                IHTMLScriptElement e = (IHTMLScriptElement)s.DomElement; 
                e.text = "window.alert=function(){};"; 
                h.AppendChild(s); 
            }; 
            WebBrowser b = sender as WebBrowser; 
            blockAlerts(b.Document); 
            for (int i = 0; i < b.Document.Window.Frames.Count; i++) 
                try { blockAlerts(b.Document.Window.Frames[i].Document); } 
                catch (Exception) { }; 
        } 
    ); 

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