How to get the address of a linked Stylesheet in webbrowser control
Question
I have a webbrowser control in a C# winform, which loads the following text:
<head>
<link rel="stylesheet" type="text/css" href="d:/git/ArticleScraper/reports/default.css">
</head>
Can I find the address of the css ( d:/git/ArticleScraper/reports/default.css ) and load it in a textbox editor? It could be a local or online css file with absolute or relative address.
I didn't find any related property or method in the webbrowser control.
2 answers
solution1
2 2019-08-21 16:10:21
WebBrowser control has an event DocumentComplete . It is triggered once your document/file loading has been completed.
First, register to the event:
webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.WebBrowser1_DocumentCompleted);
In the event callback, search for "LINK" element tag.
private void WebBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
var browser = sender as WebBrowser;
var document = browser.Document;
foreach(HtmlElement link in document.GetElementsByTagName("LINK"))
{
// this is your link:
link.GetAttribute("href")
}
}
solution2
1 2019-08-22 13:13:08
The following code will help you. This one is using LINQ query
private void Form1_Load(object sender, EventArgs e)
{
webBrowser1.Navigate(@"D:\DemoFolder\demo.html");
}
private void button1_Click(object sender, EventArgs e)
{
// Get a link
HtmlElement link = (from HtmlElement element in webBrowser1.Document.GetElementsByTagName("link") select element)
.Where(x => x.GetAttribute("rel") != null && x.GetAttribute("rel") == "stylesheet" && x.GetAttribute("href") != null).FirstOrDefault();
if (link != null)
{
// Get CSS path
string path = link.GetAttribute("href");
textBox1.Text = path;
}
}
The following is a screenshot of the output
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