Question

I have a form with an embedded web browser control on it. I am currently using WebBrowser and use it like so:

webBrowser1.Navigate("about:blank");
HtmlDocument doc = this.webBrowser1.Document;
doc.Write(string.Empty);
String htmlContent = GetHTML();
doc.Write(htmlContent);

This writes the HTML correctly to the web browser control BUT it never clears the existing data and it just appends, so I end up with N web pages stacked on top of each other.

Is this the best control to use? If so why is it not clearing existing data?

Answer 1

You need to use:

HtmlDocument doc = this.webBrowser1.Document.OpenNew(true);

now the contents of the document will be cleared before writing.

All calls to Write should be preceded
by a call to OpenNew, which will clear
the current document and all of its
variables. Your calls to Write will
create a new HTML document in its
place. To change only a specific
portion of the document, obtain the
appropriate HtmlElement and set its
InnerHtml property.