ISerializable and backward compatibility

Question

I have to work an an old application that used binaryFormatter to serialize application data into filestream (say in a file named \"data.oldformat\") without any optimizazio

Answer 1

When serializing your objects add an additional Version field (this shouldn't add too much overhead). Then in your GetObjectData method, try to retrieve the version field first and based on whether this exists or not (by catching the SerializationException) deserialize the old way or the new way. The old way will have just serialized all data so you should just be able to call Get... for all fields.