How to set initial view properties?

Question

Here I want to set the already exist PDF document properties under Initial View tab in acrobat.

Document Options:

• Sho

Answer 1

I'm adding an extra answer in answer to the extra question in the comments of the previous answer:

When you have a PdfWriter instance named writer, you can set the Viewer preferences like this:

writer.ViewerPreferences = viewerpreference;

In this case, the viewerpreference is a value that can have one of the following values:

• PdfWriter.PageLayoutSinglePage
• PdfWriter.PageLayoutOneColumn
• PdfWriter.PageLayoutTwoColumnLeft
• PdfWriter.PageLayoutTwoColumnRight
• PdfWriter.PageLayoutTwoPageLeft
• PdfWriter.PageLayoutTwoPageRight

See the PageLayoutExample for more info.

You can also change the page mode as is shown in the ViewerPreferencesExample. In which case the different values are "OR"-ed:

• PdfWriter.PageModeFullScreen
• PdfWriter.PageModeUseThumbs
• PdfWriter.PageLayoutTwoColumnRight | PdfWriter.PageModeUseThumbs
• PdfWriter.PageModeFullScreen | PdfWriter.NonFullScreenPageModeUseOutlines
• PdfWriter.FitWindow | PdfWriter.HideToolbar
• PdfWriter.HideWindowUI

Currently, you've only used the PrintPreferences example from the official documentation:

writer.AddViewerPreference(PdfName.PRINTSCALING, PdfName.NONE);
writer.AddViewerPreference(PdfName.NUMCOPIES, new PdfNumber(3));
writer.AddViewerPreference(PdfName.PICKTRAYBYPDFSIZE, PdfBoolean.PDFTRUE); 

But in some cases, it's just easier to use:

writer.ViewerPreferences = viewerpreference;

Note that the official documentation is the book "iText in Action - Second Edition." The examples are written in Java, but you can find the C# version here. There is a new book in the works called "The ABC of PDF", but so far only 4 chapters were written. You'll find more info here: http://itextpdf.com/learn

The part about the different options to create a PdfDestination is already present in "The ABC of PDF".

As for setting the language, this is done like this:

stamper.Writer.ExtraCatalog.Put(PdfName.LANG, new PdfString("EN"));

The result is shown in the following screen shot:

As you can see, there is now a Lang entry with value EN added to the catalog.