public EntityId(uint guidLow, uint guidHigh)
        {
            //m_guidFull = (ulong)(((ulong)guidLow << 32) | ((ulong)guidHigh));
            List<byte> gb = new List<byte>();
            gb.AddRange(BitConverter.GetBytes(guidHigh));
			gb.AddRange(BitConverter.GetBytes(guidLow));
			m_guidFull = BitConverter.ToUInt64(gb.ToArray(), 0);
            m_guidLow = guidLow;
            m_guidHigh = guidHigh;
            m_guidPacked = GetPacked();
        }