public override void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
if (viewModelState == null)
{
return;
}
// Try to populate address and payment method controls with default data if available
ShippingAddressViewModel.SetLoadDefault(true);
BillingAddressViewModel.SetLoadDefault(true);
PaymentMethodViewModel.SetLoadDefault(true);
// This ViewModel is an example of composition. The CheckoutHubPageViewModel manages
// three child view models (Shipping Address, Billing Address, and Payment Method).
// Since the FrameNavigationService calls this OnNavigatedTo method, passing in
// a viewModelState dictionary, it is the responsibility of the parent view model
// to manage separate dictionaries for each of its children. If the parent view model
// were to pass its viewModelState dictionary to each of its children, it would be very
// easy for one child view model to write over a sibling view model's state.
if (e.NavigationMode == NavigationMode.New)
{
viewModelState["ShippingViewModel"] = new Dictionary <string, object>();
viewModelState["BillingViewModel"] = new Dictionary <string, object>();
viewModelState["PaymentMethodViewModel"] = new Dictionary <string, object>();
}
ShippingAddressViewModel.OnNavigatedTo(e, viewModelState["ShippingViewModel"] as Dictionary <string, object>);
BillingAddressViewModel.OnNavigatedTo(e, viewModelState["BillingViewModel"] as Dictionary <string, object>);
PaymentMethodViewModel.OnNavigatedTo(e, viewModelState["PaymentMethodViewModel"] as Dictionary <string, object>);
base.OnNavigatedTo(e, viewModelState);
}
public override async void OnNavigatedTo(object navigationParameter, Windows.UI.Xaml.Navigation.NavigationMode navigationMode, Dictionary <string, object> viewModelState)
{
if (await _accountService.VerifyUserAuthenticationAsync() == null)
{
return;
}
var addressId = navigationParameter as string;
HeaderLabel = string.IsNullOrWhiteSpace(addressId)
? _resourceLoader.GetString("AddShippingAddressTitle")
: _resourceLoader.GetString("EditShippingAddressTitle");
ShippingAddressViewModel.OnNavigatedTo(navigationParameter, navigationMode, viewModelState);
}