How to retrieve custom metadata from exisisting PDF document

The custom metadata value added to a PDF document can be retrieved from XmpMetadata of DocumentInformation found in PdfLoadedDocument with the Custom metadata key which is given during addition of custom metadata to a PDF document:

Please find the code snippet for adding custom metadata to a PDF document with key and value:

C#:

Please find the code snippet for accessing the custom metadata value from existing PDF document with the help of custom metadata key and namespace:

C#:

The sample for retrieving the custom metadata from PDF loaded document can be downloaded from the link mentioned below:

http://www.syncfusion.com/downloads/support/directtrac/general/ze/RetrieveCustomMeta673441964