Read content of Web Browser in WPF

Question

Hello Developers I want to read external content from Website such as element between tag . I am using Web Browser Control and here is my code however this Code just fills my Web browser control with the Web Page

public MainWindow()
{
    InitializeComponent();

    wbMain.Navigate(new Uri("http://www.annonymous.com", UriKind.RelativeOrAbsolute));
}

I hv tried WebBrowser InspectHTML content but had no success... — user1528573, Jul 19 '12 at 11:41
Refer to the following SO question: http://stackoverflow.com/questions/2038104/parsing-html-to-get-content-using-c-sharp — ZanderAdam, Jul 19 '12 at 11:44
See [this answer](http://stackoverflow.com/a/5762063/1136211). — Clemens, Jul 19 '12 at 11:49

Tomislav Markovski · Answer 1 · 2012-07-19T13:04:03.220

4

You can use the Html Agility Pack library to parse any HTML formatted data.

HtmlDocument doc = new HtmlDocument();
doc.Load(wbMain.DocumentText);

var nodes = doc.SelectNodes("//a[@href"]);

NOTE: The method SelectNode accepts XPath, not CSS or jQuery selectors.

var node = doc.SelectNodes("id('my_element_id')");

edited Jul 19 '12 at 13:04

answered Jul 19 '12 at 11:53

Tomislav Markovski

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whenever i try to access Node i get an exception "Expression must evaluate to a node-set." – user1528573 Jul 19 '12 at 12:25
var nodes = doc.DocumentNode.SelectNodes("#text"); – user1528573 Jul 19 '12 at 12:55
1

Okay, you need to use XPath as selector, not the CSS or jQuery selectors. Example, if your DIV has id="text", then you would use `doc.DocumentNode.SelectNodes("//div[@id[starts-with(.,'text')");` I have updated my answer. – Tomislav Markovski Jul 19 '12 at 13:03

score 4 · Answer 2 · answered Jul 19 '12 at 15:27

As I understood from your question, you are only trying to parse the HTML data, and you don't need to show the actual web page. If that is the case than you can take a very simple approach and use HttpWebRequest:

    var _plainText = string.Empty;
    var _request = (HttpWebRequest)WebRequest.Create("http://www.google.com");
    _request.Timeout = 5000;
    _request.Method = "GET";
    _request.ContentType = "text/plain";
    using (var _webResponse = (HttpWebResponse)_request.GetResponse())
    {
        var _webResponseStatus = _webResponse.StatusCode;
        var _stream = _webResponse.GetResponseStream();
        using (var _streamReader = new StreamReader(_stream))
        {
            _plainText = _streamReader.ReadToEnd();
        }
    }

score 2 · Answer 3 · edited May 23 '17 at 10:28

2

Try this:

dynamic doc = wbMain.Document;
var htmlText = doc.documentElement.InnerHtml;

edit: Taken from here.

edited May 23 '17 at 10:28

Community

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answered Jul 19 '12 at 11:44

Darajan

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Copy of [this answer](http://stackoverflow.com/a/5762063/1136211). You should better refer to an existing answer. The question answered there may also be helpful to the asker here. – Clemens Jul 19 '12 at 11:50
@Clemens Thanks for the heads up. Not new to the site but new to actually trying to contribute. – Darajan Jul 19 '12 at 11:54
@Tomislav Markowski Whenever i try to access node i get an exception Expression must evaluate to a node-set. Can u tell me examples of how to use nodes – user1528573 Jul 19 '12 at 12:26

Read content of Web Browser in WPF

3 Answers3