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Message |
roman
Joined: 22 Apr 2008 Posts: 1
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Posted: Tue Apr 22, 2008 5:29 am Post subject: Help opening and modifying PDF documents |
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Hi all.
I am new to using PDFSharp and I'm a little confused on how I can open an existing document and modify the fields in it. Below is the code that I am using:
Code: |
string filepath = "C:/Documents and Settings/Administrator/Desktop/PDFsharp/PDFs/BL.pdf";
PdfDocument doc1 = new PdfDocument("Bill Of Lading instructions");
doc1 = PdfReader.Open(filepath, PdfDocumentOpenMode.Modify);
PdfPage page1 = doc1.AddPage();
PdfAcroForm acroForm = doc1.AcroForm;
PdfAcroField.PdfAcroFieldCollection fields = acroForm.Fields;
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However, the last line "PdfAcroField.PdfAcroFieldCollection" returns NullReferenceException: Object reference not set to an instance of an object. I was wondering if anyone could please help me out with my issue?
Best regards,
Roman |
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