CODEWITHSUNDEEP
c#pdfsharp
Conor Watson
Conor Watson

Reputation: 617

How to duplicate all content (including forms) with PDFSharp?

currently writing a small C# program with PDFSharp but I have a problem that I can't seem to figure out. The program is used to load in a pre-made PDF with a number of forms present, I want to read the original PDF in, duplicate it's contents into a new PDF and then fill out the forms in the new PDF. So far I have the following code:

inPDF = PdfReader.Open(sourceFile, PdfDocumentOpenMode.Import);
outPDF = new PdfDocument();

for (int idx = 0; idx < inPDF.PageCount; ++idx)
{
   outPDF.AddPage(inPDF.Pages[idx]);
}

However the new PDF does not have any of the forms present in the original, how can I duplicate the contents (including forms) of the original PDF?

Thanks, RBrNx

Upvotes: 4

Views: 476

Answers (2)

Jeff Jankowski
Jeff Jankowski

Reputation: 1

Came across this recently as I had the same issue. It seems like form fields are considered PDF annotations, so just set the second parameter:

outPDF.AddPage(inPDF.Pages[idx], AnnotationCopyingType.DeepCopy)

I'm not sure if DeepCopy is necessary versus ShallowCopy, but it probably won't hurt.

Upvotes: 0

SujetoX
SujetoX

Reputation: 34

I feel I am a bit late, but you almost got it back in those days!

You have 2 options, using AddPage or InsertPage. The main problem I encountered is that the Encoding was mandatory (I am not sure if it was only me) but here you have the code:

using System.Text;
using System.Windows;
using PdfSharp.Pdf;
using PdfSharp.Pdf.IO;

Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);

sourceFile = "YourDirectory/YourOriginalDocument.pdf";
finalFile = "YourDirectory/YourFinalDocument.pdf";

var outPDF = new PdfDocument();
var inPDF = PdfReader.Open(sourceFile, PdfDocumentOpenMode.Import);

for (int idx = 0; idx < inPDF.PageCount; ++idx)
{
    //outPDF.InsertPage(idx, inPDF.Pages[idx]); // if you prefer....
    outPDF.AddPage(inPDF.Pages[idx]);
}

// Save
outPDF.Save(finalFile);

Notice that you forgot to save the pdf (using method Save), but as I told you before, you were really close!

Upvotes: 0

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