public static void Run()
{
// ExStart:SetXMPMetadata
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdfFacades_WorkingDocuments();
// Create PdfXmpMetadata object
PdfXmpMetadata xmpMetaData = new PdfXmpMetadata();
// Bind pdf file to the object
xmpMetaData.BindPdf(dataDir+ "SetXMPMetadata.pdf");
// Add create date
xmpMetaData.Add(DefaultMetadataProperties.CreateDate, System.DateTime.Now.ToString());
// Change meta data date
xmpMetaData[DefaultMetadataProperties.MetadataDate] = System.DateTime.Now.ToString();
// Add creator tool
xmpMetaData.Add(DefaultMetadataProperties.CreatorTool, "Creator tool name");
// Remove modify date
xmpMetaData.Remove(DefaultMetadataProperties.ModifyDate);
// Add user defined property
// Step #1: register namespace prefix and URI
xmpMetaData.RegisterNamespaceURI("customNamespace", "http:// Www.customNameSpaces.com/ns/");
// Step #2: add user property with the prefix
xmpMetaData.Add("customNamespace:UserPropertyName", "UserPropertyValue");
// Change user defined property
xmpMetaData["customNamespace:UserPropertyName"] = "UserPropertyValue2";
// Save xmp meta data in the pdf file
xmpMetaData.Save(dataDir+ "SetXMPMetadata_out.pdf");
// Close the object
xmpMetaData.Close();
// ExEnd:SetXMPMetadata
}
}