<p>How to hide the default toolbar and to disallow the default context menu of the <code>DocumentViewer</code> control?</p>

You can prevent the default context menu from appearing by handling the
```
ContextMenuOpening
```
event, and setting
```
ContextMenuEventArgs.Handled
```
to true.
As for the toolbar, I'm not sure - maybe you could somehow change the default style of the DocumentView to not include the toolbar? I haven't ever done much with styles, but that is probably where I'd start looking.