The Telerik UI for WPF suite actually contains controls allowing to display all three types of documents. The respective controls are RadRichTextBox, RadSpreadsheet and RadPdfViewer. You can see them in action in our demos
(or in the Silverlight version here
) and their documentation is available at:
- Getting Started with RadRichTextBox
- Getting Started with RadSpreadsheet
- Getting Started with RadPdfViewer
I hope this helps.