/// <summary>
/// Converts as value of a currenciy to the ratio value of another currency; both ExchangeRataData have same base currency
/// </summary>
/// <param name="value">The value to convert</param>
/// <param name="currencyOfValue">The base currency</param>
/// <param name="returnCurrency">The dependent currency</param>
/// <returns></returns>
/// <remarks>Returns 0, if the base currency of both is not equal</remarks>
public static double ConvertCurrency(double value, ExchangeRateData currencyOfValue, ExchangeRateData returnCurrency)
{
try
{
if (currencyOfValue.CurrencyRelation.BaseCurrency.ID == returnCurrency.CurrencyRelation.BaseCurrency.ID)
{
if (currencyOfValue.CurrencyRelation.DepCurrency.ID != returnCurrency.CurrencyRelation.DepCurrency.ID)
{
double fromRatio = currencyOfValue.DependencyValue;
double toRatio = returnCurrency.DependencyValue;
if (fromRatio != 0 & toRatio != 0)
{
return(value / fromRatio * toRatio);
}
else
{
return(0);
}
}
else
{
return(value);
}
}
else
{
throw new ArgumentException("The exchange rates have not the same base currency.");
}
}
catch (Exception ex)
{
return(0);
}
}
/// <summary>
/// Updates exchange informations
/// </summary>
/// <param name="baseCurrency">The currency all other currencies are depending</param>
/// <param name="currencies">The dependent currencies</param>
/// <remarks></remarks>
public void Update(CurrencyInfo baseCurrency, IEnumerable <CurrencyInfo> currencies)
{
mDownloader.CancelAsyncAll();
mDonwloadCounter += 1;
mExchangeItems = new ExchangeRateData[] { };
ExchangeRateResponse resp = mDownloader.Download(this.GetCurrencyList(baseCurrency, currencies));
if (resp.Connection.State == YahooManaged.Base.ConnectionState.Success)
{
mExchangeItems = resp.Result.Items;
}
}
public static double ConvertCurrency(double value, ExchangeRateData exchangeRate, bool reverse = false)
{
if (exchangeRate != null && exchangeRate.LastTradePriceOnly != 0)
{
if (!reverse)
{
return(value * exchangeRate.LastTradePriceOnly);
}
else
{
return(value / exchangeRate.LastTradePriceOnly);
}
}
else
{
throw new ArgumentException("The exchange rate is invalid", "exchangeRate");
}
}
