I have created a PDF document for viewing and i want to set some properties, like viewing size. But i do not know how can i set a default zoom level in the PDF file i created. So, my query is, can anybody please provide any solution for this problem?

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Answers

To set zoom level, i think you can control it by specifying FitWindow(true). By setting this, in general, the zoom factor will be calculated based on the window size and PDF page size.

I find that PdfDocument has members PageLayout and PageMode. So, guess you may have a try with the following code.

PdfDocument outputDocument = new PdfDocument();
outputDocument.PageLayout = PdfPageLayout.SinglePage;

Hope this can help.

Thank you for replying. But the code is not working for me. Is there a new way of solving this?

The follows is my code that works on my side. It seems a solution for your case. At least, for u to refer.

PdfDictionary dict = new PdfDictionary(pdf);
dict.Elements["/S"] = new PdfName("/GoTo");
PdfArray array = new PdfArray(pdf);
dict.Elements["/D"] = array;
PdfReference iref = PdfInternals.GetReference(pdf.Pages[0]);
array.Elements.Add(iref);
array.Elements.Add(new PdfName("/XYZ"));
array.Elements.Add(new PdfInteger(-32768)); 
array.Elements.Add(new PdfInteger(-32768));
array.Elements.Add(new PdfInteger(1));
pdf.Internals.AddObject(dict);
pdf.Internals.Catalog.Elements["/OpenAction"] = PdfInternals.GetReference(dict);

Thanks for replying. I will try it soon and report my results here.

It works for me now. Great Thx!