/// <summary>
        /// アプリケーションの初期化
        /// </summary>
        public async void Initialize()
        {
            IsLoaded = false;

            // ユーザー情報の取得
            await crmservice.GetUserId();

            // 予定の取得
            Appointments = await crmservice.GetAppointments();

            // 初めの予定を取得
            Appointment = Appointments.FirstOrDefault();

            IsLoaded = true;
        }