DEN*_*DEN 18 .net c# webbrowser-control winforms
据我所知,有一种方法可以将javascript注入DOM.下面是使用webbrowser控件注入javascript的示例代码:
HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = webBrowser1.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
element.text = "function sayHello() { alert('hello') }";
head.AppendChild(scriptEl);
webBrowser1.Document.InvokeScript("sayHello");
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有没有更简单的方法将css注入DOM?
par*_*cle 29
我自己没有尝试过,但由于CSS样式规则可以使用<style>标签包含在文档中,如下所示:
<html>
<head>
<style type="text/css">
h1 {color:red}
p {color:blue}
</style>
</head>
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你可以尝试给予:
HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement styleEl = webBrowser1.Document.CreateElement("style");
IHTMLStyleElement element = (IHTMLStyleElement)styleEl.DomElement;
IHTMLStyleSheetElement styleSheet = element.styleSheet;
styleSheet.cssText = @"h1 { color: red }";
head.AppendChild(styleEl);
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一个去.您可以在此处找到有关IHTMLStyleElement的更多信息.
似乎答案比我原先想的要简单得多:
using mshtml;
IHTMLDocument2 doc = (webBrowser1.Document.DomDocument) as IHTMLDocument2;
// The first parameter is the url, the second is the index of the added style sheet.
IHTMLStyleSheet ss = doc.createStyleSheet("", 0);
// Now that you have the style sheet you have a few options:
// 1. You can just set the content as text.
ss.cssText = @"h1 { color: blue; }";
// 2. You can add/remove style rules.
int index = ss.addRule("h1", "color: red;");
ss.removeRule(index);
// You can even walk over the rules using "ss.rules" and modify them.
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我写了一个小测试项目,以验证这是否有效.我做了IHTMLStyleSheet MSDN上搜索,在我对面发生的事情得出这个最终结果这个网页,这个网页和这一个.
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