public decimal?RetrieveExchangeRate() { YahooData y = new YahooData(baseCurrency, convertToCurrency); decimal? rate = y.GetExchangeRate(); exchangeRate = rate; return(exchangeRate); }
public IExchangeRate GetExchangeRate() { YahooData y = new YahooData(baseCurrency, convertToCurrency); decimal? rate = y.GetExchangeRate(); exchangeRate = rate; return(this); }