Another article from The O'Reilly Network. This time they're covering serialization in .NET. The article covers the main facets of serialization: SerializableAttribute, ISerializable and IFormatter. Then the author goes into detail with a nice sample Windows Forms drawing application that uses serialization to persist the shapes drawn on the canvas to and from a Stream. In all, a good read for anyone looking to get a basic understanding of serialization in .NET.
