Calculate height of iTextSharp PDF document?

问题

How can I calculate the height of the PDF document when using iTextSharp?

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I'm using iTextSharp to position various images on a PDF document using Absolute Position. However I've noticed SetAbsolutePosition() positions the Y parameter from the bottom, so I need to calculate the height to be able to do something like:

Y = PdfHeight - i

回答1:

You should be able to do that by using the PageSize, like this...

int yPos = pdfDocument.PageSize.Height - i - elementHeight;

i = the position you would set Y if it was from the top of the page

elementHeight = the height of the element you are positioning (e.g. an image)

来源：https://stackoverflow.com/questions/7768809/calculate-height-of-itextsharp-pdf-document