Question

I renamed the class classBattle to Game and not I get “Unable to load type battle.classBattle+udtCartesian required for deserialization.”

This is the line of code MapSize = (Game.udtCartesian)formatter.Deserialize(fs);

How do I fix this? Does this mean I cannot rename classes?

Answer 1

BinaryFormatter is brittle, and is not designed to be friendly if you have changes to the types involved. If you want that type of behaviour, you need a contract-based serializer such as XmlSerializer, DataContractSerializer or protobuf-net. Anything except BinaryFormatter.