public override async void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
base.OnNavigatedTo(e, viewModelState);
_signInUserControlViewModel.OnNavigatedTo(e, viewModelState);
await UpdateShoppingCartInfoAsync();
}
public override async void OnNavigatedTo(object navigationParameter, NavigationMode navigationMode, Dictionary <string, object> viewModelState)
{
base.OnNavigatedTo(navigationParameter, navigationMode, viewModelState);
_signInUserControlViewModel.OnNavigatedTo(navigationParameter, navigationMode, viewModelState);
await UpdateShoppingCartInfoAsync();
}