private void Initialize()
{
foreach (var cur in _persistencyManager.GetSelectedCurrencies())
{
Currencies.Add(new CurrencyViewModel(cur, _currencyManager, _messenger));
}
}
private void Initialize(ICurrencyManager currencyManager, IPersistencyManager persistencyManager)
{
var selectedCurrencies = persistencyManager.GetSelectedCurrencies();
var allCurrencies = currencyManager.Currencies;
Currencies = new ObservableCollection <Currency>(allCurrencies.Except(selectedCurrencies));
}