Mastering Xamarin.Forms - Second Edition

Adding NewEntryViewModel

Finally, we will need to add a ViewModel for NewEntryPage, as follows:

1. Create a new class file in the ViewModels folder and name it NewEntryViewModel.
2. Update the NewEntryViewModel class to inherit from BaseViewModel:

      public class NewEntryViewModel : BaseViewModel       {          // ...       }

3. Add public properties to the NewEntryViewModel class that will be used to bind it to the values entered into the EntryCell elements in NewEntryPage.xaml:

      public class NewEntryViewModel : BaseViewModel       {         string _title;         public string Title         {             get { return _title; }             set              {                 _title = value;                 OnPropertyChanged();             }         }         double _latitude;         public double Latitude         {             get { return _latitude; }             set              {                 _latitude = value;                OnPropertyChanged();             }         } double _longitude; ...