// добавление\удаление в историю
public SearchMangaType Toggle(ref ObservableCollection <InHistory> History)
{
switch (_is_added)
{
case SearchMangaType.ALREADY_ADDED:
break;
case SearchMangaType.NOT_ADDED:
History.Insert(0, new InHistory(Manga));
_is_added = SearchMangaType.NOW_ADDED;
break;
case SearchMangaType.NOW_ADDED:
History.Remove(History.Single(InHistory => Manga.Compare(InHistory.Manga)));
_is_added = SearchMangaType.NOT_ADDED;
break;
default:
break;
}
RaiseProperty("is_added");
return(_is_added);
}