private decimal CalculateExchangeRate(string symbol)
{
var firstChars = symbol.Substring(0, 3);
switch (firstChars)
{
case "USD":
return(ExchangeRates.GetUsd());
case "GOL":
return(ExchangeRates.GetUsd());
case "AUD":
return(ExchangeRates.GetAud());
case "JPY":
return(ExchangeRates.GetJpy());
case "NZD":
return(ExchangeRates.GetNzd());
case "EUR":
return(ExchangeRates.GetEur());
case "GBP":
return(ExchangeRates.GetGbp());
case "CHF":
return(ExchangeRates.GetChf());
case "CAD":
return(ExchangeRates.GetCad());
case "PLN":
return(1);
default:
Console.WriteLine("nieznana waluta");
return(0);
}
}