Hi,
How can I remove metadata from an exist PDF file?
According to the link, I tried to set the metadata properties to default.
However, I got the PdfViewer error when tried to reload
or save the file.
using var pdfDoc = new PdfLoadedDocument(stream);
XmpMetadata xmpMetadata = pdfDoc.DocumentInformation.XmpMetadata;
// Set PDFSchema
xmpMetadata.PDFSchema.Producer = string.Empty;
xmpMetadata.PDFSchema.PDFVersion = string.Empty;
xmpMetadata.PDFSchema.Keywords = string.Empty;
//XMP Basic Schema
var basic = xmpMetadata.BasicSchema;
//Set the basic details of the document
basic.BaseURL = new Uri("about:blank");
basic.CreatorTool = string.Empty;
basic.Label = string.Empty;
basic.MetadataDate = DateTime.Now;
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Author));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Creator));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Keywords));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Title));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.ModificationDate));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Producer));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.Subject));
pdfDoc.DocumentInformation.Remove(nameof(pdfDoc.DocumentInformation.CreationDate));
//Save the document
MemoryStream stream = new MemoryStream();
pdfDoc.Save(stream);
//Close the document
pdfDoc.Close(true);
Th
