Question

I’m not sure how this piece of code works.

    [Serializable]
    class Blah
    {
        public Blah(int value)
        {
            this.value = value;
        }

        public int value;
    }

        BinaryFormatter b = new BinaryFormatter();
        Blah blah = new Blah(4);
        MemoryStream s = new MemoryStream();
        b.Serialize(s, blah);
        s.Seek(0, SeekOrigin.Begin);
        blah = null;
        blah = (Blah)b.Deserialize(s);

As I don’t have a parameterless constructor, it seems strange that the deserializer can create a new instance of Blah.

Answer 1

The deserialization process uses FormatterServices.GetUninitializedObject which gets an object without calling any constructor.