public TodoItemManager (string filename, IXmlStorage storage) 
		{
			repository = new TodoItemRepository(filename, storage);
		}
 public TodoItemManager(string filename, IXmlStorage storage)
 {
     repository = new TodoItemRepository(filename, storage);
 }
		public TodoItemManager (SQLiteConnection conn) 
        {
            repository = new TodoItemRepository(conn, "");
        }
 public TodoItemManager(SQLiteConnection conn)
 {
     repository = new TodoItemRepository(conn, "");
 }