public override async Task InitializeAsync()
{
if (_ratesService.Banks == null)
{
await _ratesService.UpdateRatesInfoAsync().ConfigureAwait(false);
}
var averageRates = _ratesService.GetAvarageRates();
var nbu = _ratesService.Banks[BankId.NBU];
DollarPurchaseRate = averageRates.USD.Purchase.ToString();
DollarSellRate = averageRates.USD.Sell.ToString();
EuroPurchaseRate = averageRates.EUR.Purchase.ToString();
EuroSellRate = averageRates.EUR.Sell.ToString();
OfficialExchangeRate = nbu.CurrencyRates.PLN.Purchase.ToString();
}