Is implementing ISerializable interface necessary when not implementing any custom serialization/deserialization

Question

I am looking at a class in a solution that implements the ISerializable interface. It has a GetObjectData method for serialization as required by t

Answer 1

the class really doesn't need to implement the ISerializable interface in the first place. Is that correct?

Correct. Implementing ISerializable is when you need to do something other than the default serialization behavior. The [Serializable] attribute should be enough.