Section:

Export annotations in Xamarin

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

C#

1PDFDoc doc = new PDFDoc(filename);
2
3// Extract annotations to FDF.
4// Optionally use e_both to extract both forms and annotations
5FDFDoc doc_fields = doc.FDFExtract(PDFDoc.ExtractFlag.e_annots_only); //PDFDoc.ExtractFlag.e_forms_only
6
7// Export annotations from FDF to XFDF.
8doc_fields.SaveAsXFDF(output_xfdf_filename);
9
10// Optionally write XFDF to a string
11string 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)

Did you find this helpful?

Trial setup questions?

Ask experts on Discord

Need other help?

Contact Support

Pricing or product questions?

Contact Sales