IMessageSequenceNumber Property
             Gets/sets the SequenceNumber.
            
             Returns null if not present.
             
Namespace: SolaceSystems.Solclient.MessagingAssembly: SolaceSystems.Solclient.Messaging (in SolaceSystems.Solclient.Messaging.dll) Version: 10.28.2
long? SequenceNumber { get; set; }
Property Value
NullableInt64 
             A sequence number is automatically included (if not already present) in
             the Solace-defined fields for each message sent if the session property
             
GenerateSequenceNumber is enabled.
            
             This method allows the application to retrieve the value that
             is the SequenceNumber.  The SequenceNumber is user-defined,
             carried end-to-end, and can also be matched in a selector, but otherwise is not relevant
             to the event broker.