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DataContract and XMLIgnore attribute

Intr-un post anterior am discutat despre cum putem sa serializam un IDictionary in format XML. In mod normal o clasa care nu este decorata cu atributul DataContract o sa poata fi serializata folosind DataContractSerializer fara nici o problema. In acest caz, toate proprietatiile si field-urile publice o sa fie serializate.
In specificatiile la DataContractSerializer, ne este specificat ca orice atribut folosit pentru serializare in format XML (XmlIgnore, XmlArray, Serializable etc.) sunt ignorate. Totusi cand obiectul de mai jos era serializat, atributul XmlIgnore este luat in considerare.
public Foo
{
    public string Name
    {
        get;
        set;
    }
    [XmlIgnore]
    public string Value
    {
        get;
        private set;
    }
}
In prima faza cea ce se intampla este destul de ciudat. In mod normal acesta nu ar trebui sa fie ignorat, dar practic proprietatea este ignorata in totalitate.
In realitate DataContractSerializer functioneaza asa cum ne-am astepta. Dar daca ne uitam mai atenti la modul in care este definita proprietatea Value, putem sa observam ca set-ul este private. DataContractSerializer serializeaza toate proprietatiile publice, iar Value nu este public. Aceasta are doar get-erul public, iar set-erul este private. Cu sau fara atributul XmlIgnore, aceasta proprietate nu este serializata.
Enjoy!

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