MANAGING DOCUMENTS
WPF includes three different kinds of documents: flow documents, fixed documents, and XPS documents. These different kinds of documents provide support for high-end text viewing and printing.
XPS EXPLAINED
XPS (XML Paper Specification) is a Microsoft standard that defines fixed-format documents similar to PDF files. An XPS reader can view an XPS file but will not reformat it as a web browser might rearrange the text on a web page. For more information, see the section “XPS Documents” in Chapter 11.
The following table summarizes the controls that WPF provides for viewing these kinds of documents.
| CONTROL | PURPOSE |
| DocumentViewer | Displays fixed documents page by page. |
| FlowDocument PageViewer | Displays a flow document one page at a time. If the control is wide enough, it may display multiple columns although it still displays only one page at a time. |
| FlowDocument Reader | Displays flow documents in one of three modes. When in single page mode, it acts as a FlowDocumentReader. When in scrolling mode, it acts as a FlowDocumentScrollViewer. In book reading mode, it displays two pages side by side much as a real book does. |
| FlowDocument ScollViewer | Displays an entire flow document in a single long scrolling page and provides scroll bars to let the user move through the document. |
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