CODEWITHSUNDEEP
c#multithreadingbrowser
user2183935
user2183935

Reputation: 105

Can't Extract Hyperlinks Using WebBrowser in C#

I'm having a problem when trying to extract hyperlinks from web document!

The approach I'm trying to use is shown below:

HtmlElementCollection ht = wb.Document.Links;

foreach (HtmlElement item in ht)
{
    if (item.GetAttribute("href").Contains("name"))
    {
        linkList.Add(item.GetAttribute("href"));
    }
}

When executing this code I get error "Specified cast is not valid." I guess the problem is in the fact, that method executing this code is called on a separate thread than webbrowser. On the same thread i have no problem calling the method.

Upvotes: 0

Views: 234

Answers (2)

user2183935
user2183935

Reputation: 105

The solution I found is placing the "link getting code" in separate method and invoking the method, on the main thread (where browser is running).

BeginInvoke(new MethodInvoker(delegate() { getUsers(webBrowser1, linkList); }));

Upvotes: 1

Ozan ÇAKİN
Ozan ÇAKİN

Reputation: 163

You can try this code

        HtmlElementCollection hc = webBrowser1.Document.GetElementsByTagName("a");
        for (int i = 0; i < hc.Count; i++)
        {
            if (hc[i].GetAttribute("href") == "name")
                listBox1.Items.Add(hc[i].InnerHtml);// Or InnerText
        }

Upvotes: 1

Related Questions