Hi,
I'm using the PDFViewer control to display a fillable PDF document to the user in an Asp.Net MVC web page. The display works fine and I can show the PDF to the user in the browser. However, the next step is to update the PDF with the data that the user fills in and save it back to the server.
Towards this, I'm leveraging the Download event of the PDF Viewer, since the filled in form data is passed in to this method as JSON. However, I'm unable to fill the form fields and save down the PDF. Below is my controller code for the Download method:
public object Download(pdfViewerJsonResult jsonResultObj)
{
PdfViewerHelper helper = new PdfViewerHelper();
// First, get the empty, unfilled version of the document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(helper.DocumentStream);
foreach (PdfLoadedField field in loadedDocument.Form.Fields)
{
if (field is PdfLoadedTextBoxField)
{
((PdfLoadedTextBoxField)field).Text = "1";
}
}
loadedDocument.Save(@"C:\Test\FormDocument.pdf");
loadedDocument.Close(true);
}
In the above code snippet, I'm trying to simply set the value for all fillable form fields to "1", but even that is not working. On top of that, when I open the saved document, it already switches to ReadOnly, meaning, when I re-open the saved document in Adobe PDF, the fillable fields are no longer part of the document.
Attached is the PDF i'm using to test this,
