DocumentViewerBase.IsMasterPage Attached Property
Gets a value that indicates whether or not a child element in the viewer should be used as a master page.
Assembly: PresentationFramework (in PresentationFramework.dll)
This attached property is used to indicate which DocumentPageView in the PageViews collection represents master page. The master page corresponds to the page that is currently active (being displayed) in the viewer.
Typically, no more than one member of the PageViews collection is marked as the master page. If more than one member of the PageViews collection is marked as the master page, then the first indicated DocumentPageView in the logical tree (depth-first) is designated the active master. If no members of the PageViews collection are marked as the master page, then the master page defaults to the first member of the PageViews collection.
Use the SetIsMasterPage method to set and attach this property to a specified element (dependency object). Use the GetIsMasterPage method to read the value of this attached property from a specified element.