public override void OnCreate()
        {
            base.OnCreate();

            // TODO: pick which storage library you wish to use...

			// List
//          TaskMgr = new TodoItemManager();

			// XML
//			var sqliteFilename = "TodoList.xml";
//			string libraryPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
//			var path = Path.Combine(libraryPath, sqliteFilename);
//			var xmlStorage = new AndroidTodo.XmlStorageImplementation ();
//			TaskMgr = new TodoItemManager(path, xmlStorage);

            // ADO.NET
            var sqliteFilename = "TodoADODB.db3";
            string documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal); // Documents folder
            string libraryPath = Path.Combine(documentsPath, "..", "Library"); // Library folder
            var path = Path.Combine(libraryPath, sqliteFilename);
            var db = new ADODatabase(path);
            TaskMgr = new TodoItemManager(db);

            // SQLite
//			var sqliteFilename = "TodoSqliteDB.db3";
//			string documentsPath = Environment.GetFolderPath (Environment.SpecialFolder.Personal); // Documents folder
//			var path = Path.Combine(documentsPath, sqliteFilename);
//			var conn = new Connection(path);
//			TaskMgr = new TodoItemManager(conn);

        }