为WebBrowser添加js

你可以在WebBrowser控件中注入脚本，替换原来脚本的一些方法
(1) 添加 Microsoft.mshtml.dll 引用
(2) 添加代码如下：

private  void  Form1_Load( object  sender, EventArgs e)
{
    webBrowser1.DocumentCompleted +=  new  WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
}

void  webBrowser1_DocumentCompleted( object  sender, WebBrowserDocumentCompletedEventArgs e)
{
    var htmlDoc = (IHTMLDocument3)webBrowser1.Document.DomDocument;
    HTMLHeadElement head = htmlDoc.getElementsByTagName( "head" ).Cast().First();
    var script = (IHTMLScriptElement)((IHTMLDocument2)htmlDoc).createElement( "script" );
    script.text =  "window.onload=function() { alert('test') }" ;
    head.appendChild((IHTMLDOMNode)script);
}

private  void  button1_Click( object  sender, EventArgs e)
{
    webBrowser1.Navigate( "http://www.hao123.com" );
} private  void  Form1_Load( object  sender, EventArgs e)
{

    webBrowser1.DocumentCompleted +=  new  WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
}

void  webBrowser1_DocumentCompleted( object  sender, WebBrowserDocumentCompletedEventArgs e)
{
    var htmlDoc = (IHTMLDocument3)webBrowser1.Document.DomDocument;
    HTMLHeadElement head = htmlDoc.getElementsByTagName( "head" ).Cast().First();
    var script = (IHTMLScriptElement)((IHTMLDocument2)htmlDoc).createElement( "script" );
    script.text =  "window.onload=function() { alert('test') }" ;
    head.appendChild((IHTMLDOMNode)script);
}

private  void  button1_Click( object  sender, EventArgs e)
{
    webBrowser1.Navigate( "http://www.hao123.com" );
}

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