C# 大小端转换

https://www.cnblogs.com/Jasmine-K/p/7659908.html

使用 BinaryPrimitives 辅助转换

获取了byte[] bufferSpan的内容，接下来就可以调用 BinaryPrimitives 静态类提供的方法进行转换

uint value = BinaryPrimitives.ReadUInt32BigEndian(bufferSpan);

使用数组反转的方式转换

        public  byte[] Big2Little(List<uint> bufferlist)
        {
            if (bufferlist == null || bufferlist.Count <= 0)
            {
                return null;
            }
            uint[] buffers = bufferlist.ToArray();
            for(int i=0;i< buffers.Length; i++)
            {
                buffers[i] = BitConverter.ToUInt32(BitConverter.GetBytes(buffers[i]).ToArray(), 0);
            }
            byte[] datas = new byte[buffers.Length * 4];
            Buffer.BlockCopy(buffers, 0, datas, 0, buffers.Length * 4);
            return datas;
        }