Update AcroForms Field from code

Question

Georgi · Accepted Answer

Hello Ali,

Thank you for your feedback.

RadPdfViewer is used only for visualization purposes and not for editing. The reason behind this is that RadPdfViewer and PdfProcessing share the same public API but differ internally. We understand this is inconvenient and we are currently working to merge both models into one. As a possible workaround, you can import and edit the document using the PdfFormatProvider of the PdfProcessing library. After exporting it, you can import it using the PdfFormatProvider of RadPdfViewer as can be seen in the following forum thread. For example, to apply the value of a TextBoxField with a specified name, the following code can be used:

PdfFormatProvider pdfProcessingFormatProvider = new PdfFormatProvider();

RadFixedDocument document = pdfProcessingFormatProvider.Import(File.ReadAllBytes(fileName));

TextBoxField textField = document.AcroForm.FormFields[formFieldName] as TextBoxField;

if (textField != null)

{

textField.Value = "New value";

}

byte[] documentData = pdfProcessingFormatProvider.Export(document);

PdfFormatProvider pdfViewerFormatProvider = new PdfFormatProvider(new MemoryStream(documentData));

RadFixedDocument editedDocument = pdfViewerFormatProvider.Import();

this.pdfViewer.Document = editedDocument;

I hope this helps.

Regards,
Georgi
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