BeFriend.ViewModel.TimerPageViewModel.TimerValueRetriever C# (CSharp) Method

        private void TimerValueRetriever()
        {
            var applicationData = ApplicationData.Current;
            var localsettings = applicationData.LocalSettings;
            if (localsettings.Values == null) return;
            if (localsettings.Values.ContainsKey("TimerTime"))
            {
                timerValue = Convert.ToDouble(localsettings.Values["TimerTime"]);

                if (timerValue > 60)
                {
                    MinuteValue = 01;
                    SecondsValue = timerValue - 60;
                }
                else if (timerValue < 60)
                {
                    MinuteValue = 00;
                    SecondsValue = timerValue;
                }
                else
                {
                    SecondsValue = 00;
                    MinuteValue = 1;
                }
            }

            else
            {
                MinuteValue = 00;
                SecondsValue = 20;
                localsettings.Values.Add("TimerTime",(double)20);
            }

            RaisePropertyChanged(()=>MinuteValue);
            RaisePropertyChanged(()=>SecondsValue);
        }