Header, footer and large tables with iTextSharp

Question

I\'ve added an header and a footer on my document by PdfPageEventHelper.

The document has several \"large\" tables populated at runtime.

I\'ve tried to add t

Answer 1

In your OnEndPage method you have this line:

head.WriteSelectedRows(0, -1, 10, page.Height - cellHeight + head.TotalHeight - 30, writer.DirectContent);

That code correctly calculates where to put content based on the page's height and top margin but also includes a magical 30 in there which is causing the header to be drawn on top of the table. Change it to this and your header will be fine.

head.WriteSelectedRows(0, -1, 10, page.Height - cellHeight + head.TotalHeight, writer.DirectContent);

I'm guessing that that 30 is trying to include some padding between your header and the table itself. What I would recommend is actually changing the document's margins themselves in the main code:

document.SetMargins(document.LeftMargin, document.RightMargin, document.TopMargin + 30, document.BottomMargin);

And then accounting for that in the OnEndPage method:

float cellHeight = document.TopMargin - 30;

Your footer code doesn't actually account for the bottom margin and just draws it at 50 so this will always overlap. The quick fix would be to change it to:

footer.WriteSelectedRows(0, -1, 10, footer.TotalHeight, writer.DirectContent);

This will at least get the footer bottom-aligned. If you want some more padding like above just adjust the document margins again:

document.SetMargins(document.LeftMargin, document.RightMargin, document.TopMargin + 30, document.BottomMargin + 30);