private void SegControl_ValueChanged(object sender, SegmentedControl.FormsPlugin.Abstractions.ValueChangedEventArgs e)
        {
            switch (e.NewValue)
            {
            case 0:     //daily
                if (isFirstTimeOpenPage)
                {
                    charViewModel.ChartDataPopulation(currentDate);
                    isFirstTimeOpenPage = false;
                }
                ShowDailyChart();
                break;

            case 1:     // weekly
                ShowWeeklyChart();
                break;

            case 2:     //mothly
                ShowMonthlyChart();
                break;
            }
        }