Introduction
Copying pages between PDF
documents can be seen as a special case of merging described in one
of the earlier posts. A small piece of code below shows how to perform this
task if you have only two PDF documents and want to copy a page from A to B.
The code
public void CopyPDFPage()
{
// open
documents
using (Stream s1 = File.OpenRead("source.pdf"),
s2 = new FileStream("destination.pdf",FileMode.Open,FileAccess.ReadWrite))
{
//
create document objects
FixedDocument source = new FixedDocument(s1);
FixedDocument destination = new FixedDocument(s2);
//
export first page from source doc and add to destination
destination.Pages.Add(Page.Export(destination,
source.Pages[0]));
// save changes
as incremental update
destination.Save();
}
}
The main step here, required to
copy a Page (or any other resource) from one doc to another, is the call to the
static Export method. PDF resources
used on the particular PDF page (images, drawings, etc.) can be defined in
various places across the document and referenced within the page’s content. These resources must be repacked in order to
correctly copy the page. That’s what the Export() call does – it prepares the
page and referenced resources for copying.
Conclusion
PDF processing is easy with the
right tools. Try the Apitron PDF
Kit .NET component and see for yourself. Read our free book
with ready to use, thoroughly explained samples, and let us know what you
think.
Downloadable version of this article can be found by the following link [PDF].
Downloadable version of this article can be found by the following link [PDF].
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