private void SetPrice(out PriceVolume thePrice, IFIXGroup singleGroup)
{
int iVolume = singleGroup.get_AsNumber(FIXTagConstants.esFIXTagMDEntrySize);
if (iVolume == 0)
{
thePrice = new PriceVolume(null, null);
}
else
thePrice = new PriceVolume(iVolume, singleGroup.get_AsDouble(FIXTagConstants.esFIXTagMDEntryPx));
}