Have you tried

myPayment.Properties["GiftCardNumber"]

?

Yep, it is not populated. After looking at the serialized object in the database, the GiftCardNumber is saved as a property of the payment, but it is not deserialized. And I think this happens because "GiftCardNumber" is not a property of the SerializedPayment object. 

e.g.

{               
               "amount":1000.0,
               "authorizationCode":null,
               "billingAddress":null,
               "customerName":null,
               "implementationClass":"Mediachase.Commerce.Orders.GiftCardPayment,Mediachase.Commerce",
               "paymentId":0,
               "paymentMethodId":"87d23fd7-19ba-41bd-95e2-41504203bfaf",
               "paymentMethodName":"giftcard",
               "paymentType":3,
               "providerTransactionID":null,
               "status":"Pending",
               "transactionID":null,
               "transactionType":"Authorization",
               "validationCode":null,
               "giftCardNumber":"123",
               "properties":{ 

               }
}

As you can see, the properties property is empty.

Ok, interesting.

I assume you're working with IPayment objects when trying to retrieve the data. Have you tried casting to GiftCardPayment? It seems like that's what the cart is ultimately serializing them as.

I tried, but at runtime, the IPayment is actually SerializablePayment which cannot be cast to GiftCardPayment. We ultimately reverted back to regular carts, but as soon as we find a way to deserialize extra payment information we will return to serialized carts. The performance implications are big.

Hi Adrian,

The Serializabled Cart feature works only with defined serializable objects such as: SerializableForm, SerializableShipment, SerializableLineItem, SerializablePayment, SerializableNote, SerializableOrderAddress (when deserializing cart components, it casts objetcs to corresponding serializable classes). In your case, the workaround could be: adding SerializablePayment to the cart instead of GiftCardPayment, and put all properties of GiftCardPayment you need into the Properties property of SerializablePayment:

payment.Properties["GiftCardNumber"] = 123;
payment.Properties["GiftCardSecurityCode"] = "abc";
//...etc

/Bien Nguyen

Hi Bien, thank you for your answer, it makes sense. I will play with it and see how the entire workflow (all the way to the place order) will work.

Thanks again.