XamarinAdventCalendarApp: PublicationViewModel.cs (Refresh code)

PublicationViewModel.cs

public class PublicationViewModel : BaseViewModel
{
    // properties and commands - code omitted

    private bool _isRefreshing;

    public bool IsRefreshing
    {
        get => _isRefreshing;
        set { _isRefreshing = value; OnPropertyChanged(); }
    }

    public ICommand RefreshCommand { private set; get; }

    public PublicationViewModel()
    {
        //.. constructor - code omitted

        RefreshCommand = new Command(async () => await LoadPublications());
    }

    // methods - code omitted

    async Task LoadPublications()
    {
        // code omitted

        IsRefreshing = false;
    }
}