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Export form data from PDFkeyboard_arrow_down

Extract FDF data from a PDF

To extract data from PDF to FDF, then export FDF as XFDF

PDFDoc doc = new PDFDoc(filename);

// Extract form fields data to FDF.
// Optionally use e_both to extract both forms and annotations
FDFDoc doc_fields = doc.FDFExtract(PDFDoc.ExtractFlag.e_forms_only);
doc_fields.SetPdfFileName(filename);
doc_fields.Save(output_fdf_filename);

// Export form fields data from FDF to XFDF.
doc_fields.SaveAsXFDF(output_xfdf_filename);

// Optionally write XFDF to a string
string XFDF_string = doc_fields.SaveAsXFDF();

PDF Form Fill and Form Data Extraction
Full sample code which illustrates basic FDF merge/extract functionality and full support for FDF (Forms Data Format)

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