TagRequestViewModel.cs

namespace Parking_Tag_Picker_WRT.ViewModel
{
    public class TagRequestViewModel : INotifyPropertyChanged
    {

        public RelayCommand TagRequestCommand
        {
            get;
            private set;
        }


        public TagRequestViewModel()
        {
          
            LoadCommands();
        }



        private async void LoadCommands()
        {
            TagRequestCommand = new RelayCommand(async () =>
            {
                await SendParkingTagSMSRequest();
            } ,CanSendCommand );
        }



        private bool CanSendCommand()
        {
            if (SelectedParkDuration != null && RegNumber != string.Empty && SelectedZone.ZoneName != null)
            {
                return true;
            }

            return false;
        }
        



        private string _selectedCouncilId;
        public string SelectedCouncilId
        {
            get
            {
                return _selectedCouncilId;
            }
            set
            {
                if (_selectedCouncilId != value)
                {
                    _selectedCouncilId = value;
                    RaisePropertyChanged("SelectedCouncilId");
                }
            }
        }


        
        private string _regNumber;
        public string RegNumber
        {
            get
            {
                return this._regNumber;
            }

            set
            {
                if (_regNumber != value)
                {
                    _regNumber = value;
                    RaisePropertyChanged("RegNumber");
                }
            }
        }

        private ZoneInfo _selectedZone;
        public ZoneInfo SelectedZone
        {
            get
            {
                return this._selectedZone;
            }

            set
            {
                if (_selectedZone != value)
                {
                    _selectedZone = value;
                    RaisePropertyChanged("SelectedZone");
                }
            }
        }


        private TimeSpan? _selectedParkDuration;
        public TimeSpan? SelectedParkDuration
        {
            get
            {
                return this._selectedParkDuration;
            }

            set
            {
                if (_selectedParkDuration != value)
                {
                    _selectedParkDuration = value;
                    RaisePropertyChanged("SelectedParkDuration");
                }
            }
        }




  



        public async Task SendParkingTagSMSRequest()
        {
            await SMSTaskExtensions.SendParkingTagSMSRequest(SelectedZone, RegNumber, SelectedParkDuration);

        }

        public event PropertyChangedEventHandler PropertyChanged;

        public void RaisePropertyChanged(string prop)
        {
            if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(prop)); }
        }


    }

}