.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

That worked for me:

webBrowser.Navigate("about:blank");
webBrowser.Document?.Write(htmlString);

Answer 2

I found the following and it worked!

    webBrowser.Navigate("about:blank");
    webBrowser.Document.OpenNew(false);
    webBrowser.Document.Write(html);
    webBrowser.Refresh();

Answer 3

please refer to this answer c# filenotfoundexception on webbrowser?

Answer 4

Just spotted this in some of our old code.

_webBrowser.DocumentText = builder.WriteToString( ... );

Application.DoEvents();

Apparently a DoEvents also kicks the browser into rendering

Answer 5

While Application.DoEvents() fix it in a WinForms project, it was irrelevant in a WPF project.

I finally got it to work by using webBrowser.Write( htmlContent ) (instead of webBrowser.DocumentText = htmlContent).

Answer 6

This always works

using mshtml;


private IHTMLDocument2 Document
{
    get
    {
        if (Browser.Document != null)
        {
            return Browser.Document.DomDocument as IHTMLDocument2;
        }

        return null;
    }
}


if (Document == null)
{
    Browser.DocumentText = Contents;
}
else
{
    Document.body.innerHTML = Contents;
}