Silverlight version 3 processes JSON messages using a mapping between JSON data and the XML Infoset. Normally, this mapping is hidden from view. However, in some advanced scenarios it might be necessary to manually convert between JSON and XML. In this case, the JsonReaderWriterFactory class can be used to create the necessary XML readers and writers. Note that not every XML Infoset element can be mapped to JSON.
For more information about
mapping, see
Mapping between JSON and XML.