I have a large XML Data file and my question is does the radbook control supports loading the XML data file and will the user be able to view the data by expanding and collapsing nodes?
Telerik RadBook can contain almost any control you want it to.
Essentially the pages of the RadBook are containers where you can place
the control that will display the XML for you. So as long as you've properly setup the xml's display control (for
instance, a RadRichTextBox), the RadBook will perform as expected with
page turn animations and more.
This link will show you the data binding and data template properties of the control.