Gets the owner DocumentReader
Instances of DocumentReaderPage aren't directly created, instead the pages of a document are automatically created and set in the DocumentReader.Pages property when a document is created or loaded.
For an example, refer to DocumentReaderPage.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2