Mengatur Metadata XMP dari PDF yang ada

Untuk mengatur metadata XMP dalam file PDF, Anda perlu membuat objek PdfXmpMetadata dan mengikat file PDF menggunakan metode BindPdf. Anda dapat menggunakan metode Add dari kelas PdfXmpMetadata untuk menambahkan berbagai properti. Akhirnya, panggil metode Save dari kelas PdfXmpMetadata. Potongan kode berikut menunjukkan kepada Anda cara menambahkan metadata XMP dalam file PDF.

.NET Core 3.1

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void AddXmpMetadata()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_WorkingDocuments();

    // Create PdfXmpMetadata object
    using (var xmpMetaData = new Aspose.Pdf.Facades.PdfXmpMetadata())
    {
        // Bind PDF document
        xmpMetaData.BindPdf(dataDir + "SetXMPMetadata.pdf");

        // Add create date
        xmpMetaData.Add(Aspose.Pdf.Facades.DefaultMetadataProperties.CreateDate, DateTime.Now.ToString());

        // Change meta data date
        xmpMetaData[Aspose.Pdf.Facades.DefaultMetadataProperties.MetadataDate] = DateTime.Now.ToString();

        // Add creator tool
        xmpMetaData.Add(Aspose.Pdf.Facades.DefaultMetadataProperties.CreatorTool, "Creator tool name");

        // Remove modify date
        xmpMetaData.Remove(Aspose.Pdf.Facades.DefaultMetadataProperties.ModifyDate);

        // Add user defined property
        // Register namespace prefix and URI
        xmpMetaData.RegisterNamespaceURI("customNamespace", "http:// Www.customNameSpaces.com/ns/");

        // Add user property with the prefix
        xmpMetaData.Add("customNamespace:UserPropertyName", "UserPropertyValue");

        // Change user defined property
        xmpMetaData["customNamespace:UserPropertyName"] = "UserPropertyValue2";

        // Save PDF document
        xmpMetaData.Save(dataDir + "SetXMPMetadata_out.pdf");
    }
}

.NET 8

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void AddXmpMetadata()
{
    // The path to the documents directory
    var dataDir = RunExamples.GetDataDir_AsposePdfFacades_WorkingDocuments();

    // Create PdfXmpMetadata object
    using var xmpMetaData = new Aspose.Pdf.Facades.PdfXmpMetadata();

    // Bind PDF document
    xmpMetaData.BindPdf(dataDir + "SetXMPMetadata.pdf");

    // Add create date
    xmpMetaData.Add(Aspose.Pdf.Facades.DefaultMetadataProperties.CreateDate, DateTime.Now.ToString());

    // Change meta data date
    xmpMetaData[Aspose.Pdf.Facades.DefaultMetadataProperties.MetadataDate] = DateTime.Now.ToString();

    // Add creator tool
    xmpMetaData.Add(Aspose.Pdf.Facades.DefaultMetadataProperties.CreatorTool, "Creator tool name");

    // Remove modify date
    xmpMetaData.Remove(Aspose.Pdf.Facades.DefaultMetadataProperties.ModifyDate);

    // Add user defined property
    // register namespace prefix and URI
    xmpMetaData.RegisterNamespaceURI("customNamespace", "http:// Www.customNameSpaces.com/ns/");

    // Add user property with the prefix
    xmpMetaData.Add("customNamespace:UserPropertyName", "UserPropertyValue");

    // Change user defined property
    xmpMetaData["customNamespace:UserPropertyName"] = "UserPropertyValue2";

    // Save PDF document
    xmpMetaData.Save(dataDir + "SetXMPMetadata_out.pdf");
}