How do I add a border to a page using iTextSharp?
Here is an answer (adapted from Mark Storer) in C#. This example uses the margins of the page to draw the border, which I sometimes find useful for debugging the page layout.
public override void OnEndPage(PdfWriter writer, Document document)
{
base.OnEndPage(writer, document);
var content = writer.DirectContent;
var pageBorderRect = new Rectangle(document.PageSize);
pageBorderRect.Left += document.LeftMargin;
pageBorderRect.Right -= document.RightMargin;
pageBorderRect.Top -= document.TopMargin;
pageBorderRect.Bottom += document.BottomMargin;
content.SetColorStroke(BaseColor.RED);
content.Rectangle(pageBorderRect.Left, pageBorderRect.Bottom, pageBorderRect.Width, pageBorderRect.Height);
content.Stroke();
}