public CurrencyListElementViewModel(ApiService apiService, IEventAggregator eventAggregator,
			string currencyCode, DateTime date)
        {
            _apiService = apiService;
            _eventAggregator = eventAggregator;
            InitializeProperties(currencyCode, date);
            InitializeCommands();
        }
 public CurrencyListViewModel(ApiService apiService, IEventAggregator eventAggregator)
 {
     _apiService = apiService;
     _eventAggregator = eventAggregator;
     InitializeProperties();
     InitializeCommands();
     SubscribeToEvents();
 }