/// <summary>

        /// CS和校验

        /// </summary>

        /// <param name="Abyte"></param>

        /// <returns></returns>

        public static byte Check_CS(byte[] Abyte)

        {

            byte result = new byte();

            try

            {

                int num = ;

                for (int i = ; i < Abyte.Length; i++)

                {

                    num = (num + Abyte[i]) % ;

                }

                result = (byte)num;

            }

            catch

            {

                result = ;

            }

            return result;

        }    

        /// <summary>

        /// CRC16校验函数 (一)

        /// </summary>

        /// <param name="x"></param>

        /// <returns></returns>

        private static byte[] CRC16(byte[] x)

        {

            byte[] temdata = new byte[];

            int len = x.Length;

            UInt16 crc = ;

            byte da;

            int i = ;

            UInt16[] yu = { 0x0000,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,

                            0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef };

            while (len-- != )

            {

                da = (byte)(((byte)(crc / )) / );

                crc <<= ;

                crc ^= yu[da ^ x[i] / ];

                da = (byte)(((byte)(crc / )) / );

                crc <<= ;

                crc ^= yu[da ^ x[i] & 0x0f];

                i++;

            }

            temdata[] = (byte)(crc & 0xFF);

            temdata[] = (byte)(crc >> );

            return temdata;

        }    

        /// <summary>

        /// CRC16校验类 (二)

        /// </summary>

        public static class Crc16

        {

            const ushort polynomial = 0xA001;

            static readonly ushort[] table = new ushort[];

            /// <summary>

            /// 获得校验字符串

            /// </summary>

            /// <param name="bytes"></param>

            /// <returns></returns>

            public static string ComputeChecksum(byte[] bytes)

            {

                ushort crc = ;

                for (int i = ; i < bytes.Length; ++i)

                {

                    byte index = (byte)(crc ^ bytes[i]);

                    crc = (ushort)((crc >> ) ^ table[index]);

                }

                return crc.ToString("X4");

            }

            static Crc16()

            {

                ushort value;

                ushort temp;

                for (ushort i = ; i < table.Length; ++i)

                {

                    value = ;

                    temp = i;

                    for (byte j = ; j < ; ++j)

                    {

                        if (((value ^ temp) & 0x0001) != )

                        {

                            value = (ushort)((value >> ) ^ polynomial);

                        }

                        else

                        {

                            value >>= ;

                        }

                        temp >>= ;

                    }

                    table[i] = value;

                }

            }

        }    

 private static UInt32[] crcTable = {

                0x0, 0x77073096, 0xee0e612c, 0x990951ba, 0x76dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,

                0xedb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x9b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,

                0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,

                0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,

                0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,

                0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,

                0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,

                0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,

                0x76dc4190, 0x1db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x6b6b51f, 0x9fbfe4a5, 0xe8b8d433,

                0x7807c9a2, 0xf00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x86d3d2d, 0x91646c97, 0xe6635c01,

                0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,

                0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,

                0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,

                0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,

                0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,

                0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,

                0xedb88320, 0x9abfb3b6, 0x3b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x4db2615, 0x73dc1683,

                0xe3630b12, 0x94643b84, 0xd6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0xa00ae27, 0x7d079eb1,

                0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,

                0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,

                0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,

                0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,

                0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,

                0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,

                0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x26d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x5005713,

                0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0xcb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0xbdbdf21,

                0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,

                0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,

                0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,

                0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,

                0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,

                0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,

            };

        /// <summary>

        /// 获取CRC32校验字符串

        /// </summary>

        /// <param name="bytes"></param>

        /// <returns>4字节16进制码</returns>

        public static string GetCRC32(byte[] bytes)

        {

            int iCount = bytes.Length;

            UInt32 crc = 0xFFFFFFFF;

            for (int i = ; i < iCount; i++)

            {

                crc = ((crc >> ) & 0x00FFFFFF) ^ crcTable[(crc ^ bytes[i]) & 0xFF];

            }

            UInt32 temp = crc ^ 0xFFFFFFFF;

            return temp.ToString("X8");

        }

        /// <summary>

        /// BCC异或取反校验

        /// </summary>

        /// <param name="data"></param>

        /// <returns></returns>

        public static string getBCC(byte[] data)

        {

            String ret = "";

            byte[] BCC = new byte[];

            for (int i = ; i < data.Length; i++)

            {

                BCC[] = (byte)(BCC[] ^ data[i]);

            }

            String hex = ((~ BCC[]) & 0xFF).ToString("X");//取反操作

            if (hex.Length == )

            {

                hex = '' + hex;

            }

            ret += hex.ToUpper();

            return ret;

        }