C＃ - 获取从JavaScript的网页浏览器产生的变量 [英] C# - Get variable from webbrowser generated by javascript

问题描述

已经由web浏览器下载的网页，并需要获得电子邮件地址。但它是由javastript生成。在code我能找到此脚本：

 ＆LT;脚本类型=文/ JavaScript的字符集=utf-8＆GT; VAR I ='和;＃109;一个'+'I和＃108; +'和;＃116; O'; VAR一个='impexta＆放大器;＃64; impexta＆安培;＃46; SK';的document.write（'＆LT; A HREF =+ I +：+ A +'的onclick = _kt.i（386728，20）;＆GT;'+ A +'＆下; / A＆GT;'）;＆下; /脚本＆GT;
 

我看了到处如何调用脚本，由我不知道他的名字。所以，我想是得到一个变量值。

编辑：code面前：

  ...
web浏览器WB =新的WebBrowser（）;
wb.DocumentCompleted + =新WebBrowserDocumentCompletedEventHandler（wb_DocumentCompleted）;
wb.Navigate（URL）;为（;！wb.ReadyState = WebBrowserReadyState.Complete;）
{
    System.Windows.Forms.Application.DoEvents（）;
}
...无效wb_DocumentCompleted（对象发件人，WebBrowserDocumentCompletedEventArgs E）
{
        web浏览器WB =发件人作为web浏览器;
        如果（WB！= NULL）
        {
            如果（wb.ReadyState == WebBrowserReadyState.Complete）
            {
                HtmlAgilityPack.HtmlDocument DOC =新HtmlAgilityPack.HtmlDocument（）;
                doc.Load（wb.DocumentStream）;
             }
        }
}
 

解决方案

我找到简单的解决方案。刚找到字符串右边部分HTML code：

 的foreach（在root.SelectNodes（HtmlNode链接//脚本））
{
    如果（link.InnerText.Contains（+ A +））
    {
        字符串[] =可疑交易报告新的字符串[] {VAR一个='，';文件撰写};
        可疑交易报告= link.InnerText.Split序列（STR，StringSplitOptions.None）;
        发件= System.Net.WebUtility.HtmlDe code序列（STR [1]）;
        如果（发件！=）
        {
            打破;
        }
    }
}
 

have downloaded page by webbrowser and need to get mail address. But it is generated by javastript. In code i can find this script:

<script type="text/javascript" charset="utf-8">var i='&#109;a'+'i&#108;'+'&#116;o';var a='impexta&#64;impexta&#46;sk';document.write('<a href="'+i+':'+a+'" onclick="_kt.i(386728, 20);">'+a+'</a>');</script>

I read everywhere how to Invoke script, by i don't know his name. So what i want is to get "a" variable value.

EDIT: Code before:

...
WebBrowser wb = new WebBrowser();
wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(wb_DocumentCompleted);
wb.Navigate(url);

for (; wb.ReadyState != WebBrowserReadyState.Complete; )
{
    System.Windows.Forms.Application.DoEvents();
}
...

void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
        WebBrowser wb = sender as WebBrowser;
        if (wb != null)
        {
            if (wb.ReadyState == WebBrowserReadyState.Complete)
            {
                HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
                doc.Load(wb.DocumentStream);
             }
        }
}

解决方案

I found easy solution. Just finding the right part of string in HTML code:

foreach (HtmlNode link in root.SelectNodes("//script"))
{
    if (link.InnerText.Contains("+a+"))
    {
        string[] strs = new string[] { "var a='", "';document.write" };
        strs = link.InnerText.Split(strs, StringSplitOptions.None);
        outMail = System.Net.WebUtility.HtmlDecode(strs[1]);
        if (outMail != "")
        {
            break;
        }
    }
}

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