public YearEditPage(YearEditPageViewModel vm = null)
{
InitializeComponent();
//This next page does non-destructive editing - back button title reflects this
NavigationPage.SetBackButtonTitle(this, "Cancel");
//Bind to the view model
BindingContext = vm ?? new YearEditPageViewModel();
}
// Navigate to the About page - providing both View and ViewModel pair
void NavigateToYearEditPage()
{
//This has a concrete reference to a view inside a VM - is this good/bad/indifferent?
// Create viewmodel and pass datamodel as a parameter
// NOTE that Model is a reference type
YearEditPageViewModel vm = new YearEditPageViewModel(Model); //VM knows about its model (reference)
// Instantiate the view, and provide the viewmodel
YearEditPage nextPage = new YearEditPage(vm); //View knows about it's VM
Navigation.PushAsync(nextPage);
}
