Aspose.Pdf.Examples.CSharp.AsposePDF.WorkingDocuments.SetXMPMetadata.SetPrefixMetadata C# (CSharp) Method

        public static void SetPrefixMetadata()
        {
            // ExStart:SetPrefixMetadata
            // The path to the documents directory.
            string dataDir = RunExamples.GetDataDir_AsposePdf_WorkingDocuments();

            // Open document
            Document pdfDocument = new Document(dataDir + "SetXMPMetadata.pdf");
            pdfDocument.Metadata.RegisterNamespaceUri("xmp", "http:// Ns.adobe.com/xap/1.0/"); // Xmlns prefix was removed
            pdfDocument.Metadata["xmp:ModifyDate"] = DateTime.Now;

            dataDir = dataDir + "SetPrefixMetadata_out.pdf";
            // Save document
            pdfDocument.Save(dataDir);
            // ExEnd:SetPrefixMetadata

        }
    }