private void BindablePicker_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (userProfileVM.IsLoadCity == true)
            {
                userProfileVM.IsLoadCity = false;
                return;
            }
            var stateIndex = Convert.ToInt32(StatePicker.SelectedIndex) + 1;
            var lstCity    = userProfileVM.GetCityData(stateIndex.ToString());

            if (stateIndex > 0)
            {
                CityPicker.ItemsSource = lstCity;
                // CityPicker.IsEnabled = true;
            }
        }