c# - wpf inherited DocumentViewer and Frame Navigation -


i wrote class inherits documentviewer

public class mydocumentviewer : documentviewer {     public bool landscape{ get; set; }      protected override void onprintcommand()     {         // print dialog, defaulted default printer , default printer's preferences.         printdialog printdialog = new printdialog();         printdialog.printqueue = system.printing.localprintserver.getdefaultprintqueue();         printdialog.printticket = printdialog.printqueue.defaultprintticket;          // reference fixeddocumentsequence viewer.         fixeddocumentsequence docseq = this.document fixeddocumentsequence;          // set default page orientation based on desired output.         if(!landscape)             printdialog.printticket.pageorientation = system.printing.pageorientation.portrait;         else             printdialog.printticket.pageorientation = system.printing.pageorientation.landscape;          if (printdialog.showdialog() == true)         {             // set print ticket document sequence , write printer.             docseq.printticket = printdialog.printticket;              xpsdocumentwriter writer = system.printing.printqueue.createxpsdocumentwriter(printdialog.printqueue);             writer.writeasync(docseq, printdialog.printticket);         }     }      protected override void onmanipulationboundaryfeedback(system.windows.input.manipulationboundaryfeedbackeventargs e)     {         base.onmanipulationboundaryfeedback(e);         e.handled = true;     } }

i use viewer inter alia show xps file bookmarks, , after navigating bookmark, document reloaded in standard documentviewer. know how change style after reloading cannot find how resolve problem.

is possible change default viewer fixeddocument ?

if not, maybe knows way resolve it.


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