ideserializationcallback

As MSDN states here , it can. But I've spent 2 hours digging mscorlib code, because in some cases the BinaryFormatter called my method marked with OnDeserialized BEFORE deserialization constructor. That is, the order was OnDeserializing(StreamingContext context) OnDeserialized(StreamingContext context) .ctor(SerializationInfo info, StreamingContext context) While I was expecting it to be OnDeserializing(StreamingContext context) .ctor(SerializationInfo info, StreamingContext context) OnDeserialized(StreamingContext context) And the final point. When I implemented IDeserializationCallback

As far as I understand, the IDeserializationCallback interface and the OnDeserialized event can both be used when an object needs to perform some task after being deserialized. IDeserializationCallback: [Serializable] public class Foo : IDeserializationCallback { public void OnDeserialization(object sender) { // initialize unserialized fields etc. } } OnDeserialized event: [Serializable] public class Foo { [OnDeserialized] public void OnDeserialized(StreamingContext context) { // initialize unserialized fields etc. } } Are there any specific pros/cons or scenarios where you would choose one