private XChangeRate _GetXChangeRate(CurrencyPair curPair)
{
if (curPair.IsIdentity)
{
return(new XChangeRate(1, (CurrencyPair)curPair.Clone()));
}
else
{
if (CcyList.Contains(curPair.Ccy1) && CcyList.Contains(curPair.Ccy2))
{
XChangeRate xRate = FX.Where(x => x.CcyPair.IsEquivalent(curPair)).FirstOrDefault();
if (xRate == null)
{
return(null);
}
if (xRate.CcyPair.Equals(curPair))
{
return(xRate);
}
else
{
return(xRate.GetInverse());
}
}
else
{
return(null);
}
}
}