专用通信

 /// <summary>
        /// 解析报文，适用-协议只有头部标记
        /// </summary>
        /// <param name="rawData">原始报文</param>
        /// <param name="headCode">报文头部标识</param>
        /// <returns></returns>
        public static string Solver(ref string rawDgram, string headCode)
        {
            if (string.IsNullOrEmpty(rawDgram) || rawDgram.Length <= headCode.Length) { return string.Empty; }   //如果报文为空||报文的长度小于等于头部标记的长度，返回为空

            int headIndex = -1;                      //头部索引

            int endIndex = -1;                       //尾部索引

            string tempDgram = string.Empty;

            headIndex = rawDgram.IndexOf(headCode);                //IndexOf(headCode)-头部标记字符串在报文中的第一个匹配项的索引。

            if (headIndex >= 0)                                   //报文中包含头部字节
            {
                endIndex = rawDgram.IndexOf(headCode, headIndex + headCode.Length);   //头部标识字符串在报文中第二个匹配项的索引。

                if (endIndex >= 0)                           //报文包含第二个头部标识字符串，说明报文中包含一条指令
                {
                    tempDgram = rawDgram.Substring(headIndex, endIndex - headIndex);

                    rawDgram = rawDgram.Substring(endIndex);
                }
            }
            return tempDgram;
        }


        /// <summary>
        /// 将BYTE数组转换为两位的数字字符串（专用通信）
        /// </summary>
        /// <param name="bytes">要转换的BYTE数组</param>
        /// <param name="index">转换起始位置</param>
        /// <param name="size">转换长度</param>
        /// <returns>字符串</returns>
        public static string DeserializeString(byte[] bytes, int index, int size)
        {
            if (null == bytes || bytes.Length <= index) { return string.Empty; }

            try
            {
                StringBuilder strBuilder = new StringBuilder();

                for (int i = index; i < index + size; ++i)
                {
                    strBuilder.AppendFormat("{0:X2}", bytes[i]);
                }

                return strBuilder.ToString();

            }
            catch { return null; }
        }



        /// <summary>
        /// 将2位的数字字符串转换为BYTE数组（专用通信）
        /// </summary>
        /// <param name="str"></param>
        /// <param name="index"></param>
        /// <param name="size"></param>
        /// <returns></returns>
        public static byte[] SerializeString(string str, int index, int size)
        {
            if (string.IsNullOrEmpty(str) || str.Length <= index || size < 0) { return null; }

            try
            {
                str = str.Substring(index, size);

                if (string.IsNullOrEmpty(str)) { return null; }

                int lenght = str.Length;

                byte[] bytes = new byte[lenght / 2];

                for (int i = 0; i < lenght / 2; i++)
                {
                    int btvalue = Convert.ToInt32(str.Substring(i * 2, 2), 16);

                    bytes[i] = (byte)btvalue;
                }

                return bytes;
            }
            catch { return null; }
        }



        /// <summary>
        /// 将字符串转换为BYTE数组
        /// </summary>
        /// <param name="strValue">要转换的字符串</param>
        /// <param name="encode">字符编码格式</param>
        /// <returns>BYTE数组</returns>
        public static Byte[] SerializeString(string strValue, int index, int size, Encoding encode)
        {
            if (string.IsNullOrEmpty(strValue) || strValue.Length <= index || size <= 0) { return null; }

            if (null == encode) { encode = Encoding.Default; }
            try
            {
                strValue = strValue.Substring(index, size);

                if (string.IsNullOrEmpty(strValue)) { return null; }

                return encode.GetBytes(strValue);
            }
            catch 
            {
                return null;
            }
        }



        /// <summary>
        /// 将BYTE数组转换为字符串
        /// </summary>
        /// <param name="bt">要转换的BYTE数组</param>
        /// <param name="encode">字符编码格式</param>
        /// <returns>字符串</returns>
        public static string DeserializeString(Byte[] bt, int index, int size, Encoding encode)
        {
            if (null == bt || bt.Length <= index) { return string.Empty; }

            if (null == encode) { encode = Encoding.Default; }

            try { return encode.GetString(bt, index, size); }
            catch { return string.Empty; }
        }