public Nullable <double> GetFloat64Property(PropertyID propertyID)
{
PropertyContextRecord record = GetRecordByPropertyID(propertyID);
if (record != null)
{
if (record.wPropType == PropertyTypeName.PtypFloating64)
{
if (!record.HeapOrNodeID.IsEmpty)
{
byte[] floatBytes = this.GetHeapItem(record.HeapID);
double result = LittleEndianConverter.ToFloat64(floatBytes, 0);
return(result);
}
else
{
// The hid is set to zero if the data item is empty
return(null);
}
}
else
{
throw new InvalidPropertyException("Unexpected PC data type found");
}
}
else
{
return(null);
}
}
