public ModelManagerBase()
            {
                lstCat = new SelectedPwgAlbumList();
                lstAlbumLocaux = new LocalAlbumList();
                isConnected = false;

                AlbumEdited = new LocalAlbum();
                ImageEdited = new LocalImage();
                UploadOption = new PwgUploadOption();

                LstConfidentLevel = Com.Piwigo.Lib.DTO.Helper.PwgEnumHelper<PwgConfidentLevelEnum>.buildChoiceList();
            }
 internal void resetLstCat()
 {
     if (lstCat == null)
     {
         lstCat = new SelectedPwgAlbumList();
     }
     else
     {
         lstCat.Clear();
     }
     lstCat.Add(new SelectedAlbumListItem() { Id = PwgAlbum.RootAlbumId, ShowedValue = "Root album", Data=null, isSelected=true });
 }