.Net WebBrowser.DocumentText Isn't Changing!

Question

In my vb.net program, I am using a webbrowser to show the user an HTML preview. I was previously hitting a server to grab the HTML, then returning on an asynchronous thread

Answer 1

Make sure that you do not cancel Navigating event of WebBrowser for about:blank page. WebBrowser navigates to about:blank before setting DocumentText. So if you want to handle links by yourself you need to create following handler of Navigating event:

private void webBrowser1_Navigating(object sender, WebBrowserNavigatingEventArgs e)
{
    if(e.Url.OriginalString.StartsWith("about:"))
    {
        return;
    }
    e.Cancel = true;
    // ...
}