/// <summary>
        /// Met à jour la liste des films d'une personne
        /// </summary>
        /// <param name="pers">La personne</param>
        /// <param name="film">Le film a ajouter</param>
        public override Personne mettreAJourListeFilmsDeLaPersonne(Personne pers, Film film)
        {
            pers.listeFilms.Add(film);

            using (var isolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())
            {
                using (IsolatedStorageFileStream isolatedStorageFileStream = isolatedStorage.OpenFile(XMLTags.FICHIER_PERSONNES, System.IO.FileMode.Open))
                {
                    System.Xml.XmlWriterSettings settings = new System.Xml.XmlWriterSettings();
                    settings.Indent = true;

                    using (System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(isolatedStorageFileStream, settings))
                    {
                        PersonneWriter writerPersonne = new PersonneWriterWP7();
                        writerPersonne.mXDoc = new XDocument();
                        writerPersonne.mXDoc.Add(new XElement(XMLTags.PERSONNES));
                        foreach (Personne g in listePersonnes)
                        {
                            writerPersonne.saveData(g, null);
                        }
                        writerPersonne.UpdateListeFilmsPersonne(pers, film, null);

                        writerPersonne.mXDoc.Save(writer);
                    }
                }
            }
            return(pers);
        }
        /// <summary>
        /// Réécris le fichier personnes.xml
        /// </summary>
        public override void writePersonnes()
        {
            ListePersonne liste = new ListePersonne();

            liste.InitialiseListePersonne();

            PersonneWriter writer = new PersonneWriterWP7();

            writer.WritePersonnes(liste.listePersonne);
            writer.Save(XMLTags.FICHIER_PERSONNES);
        }
        /// <summary>
        /// sauvegarde les personnes en chambre d'isolation
        /// </summary>
        /// <param name="isolatedStorage"></param>
        private void savePersonnes(IsolatedStorageFile isolatedStorage)
        {
            using (var isolatedStorageFileStream = isolatedStorage.OpenFile(XMLTags.FICHIER_PERSONNES, System.IO.FileMode.Create))
            {
                System.Xml.XmlWriterSettings settings = new System.Xml.XmlWriterSettings();
                settings.Indent = true;

                using (System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(isolatedStorageFileStream, settings))
                {
                    PersonneWriter writerPersonne = new PersonneWriterWP7();
                    writerPersonne.mXDoc = new XDocument();
                    writerPersonne.mXDoc.Add(new XElement(XMLTags.PERSONNES));
                    foreach (Personne p in listePersonnes)
                    {
                        writerPersonne.saveData(p, null);
                    }
                    writerPersonne.mXDoc.Save(writer);
                }
            }
        }