Get HTML source code from CefSharp web browser

I was having the same issue trying to get click on and item located in a frame and not on the main frame. Using the example in your answer, I wrote the following extension method:

        public static IFrame GetFrame(this ChromiumWebBrowser browser, string FrameName)
    {
        IFrame frame = null;

        var identifiers = browser.GetBrowser().GetFrameIdentifiers();

        foreach (var i in identifiers)
        {
            frame = browser.GetBrowser().GetFrame(i);
            if (frame.Name == FrameName)
                return frame;
        }

        return null;
    }

If you have a "using" on your form for the module that contains this method you can do something like:

var frame = browser.GetFrame("nameofframe");
        if (frame != null)
        {
            string HTML = await frame.GetSourceAsync();
        }

Of course you need to make sure the page load is complete before using this, but I plan to use it a lot. Hope it helps!

Jim

I don't think I quite get this DispatcherTimer solution. I would do it like this:

public frmSelection()
{
    InitializeComponent();

    wb.FrameLoadEnd += WebBrowserFrameLoadEnded;
    wb.Address = "http://www.racingpost.com/horses2/cards/card.sd?race_id=644222&r_date=2016-03-10#raceTabs=sc_";
}

private void WebBrowserFrameLoadEnded(object sender, FrameLoadEndEventArgs e)
{
    if (e.Frame.IsMain)
    {
        wb.ViewSource();
        wb.GetSourceAsync().ContinueWith(taskHtml =>
        {
            var html = taskHtml.Result;
        });
    }
}

I did a diff on the output of ViewSource and the text in the html variable and they are the same, so I can't reproduce your problem here.

This said, I noticed that the main frame gets loaded pretty late, so you have to wait quite a while until the notepad pops up with the source.