将输入为十六进制的字符串转换为数字

         /// <summary>
        /// 将输入为十六进制的字符串转换为数字
        /// </summary>
        /// <param name="data"></param>
        /// <returns></returns>
        #region

        public byte[] StringToByte(string data)
        {
            List<byte> bdata = new List<byte>();
            char[] bufdata = data.ToCharArray();
            if (data.Length % 2 == 0)
            {
                byte buf1 = 0;

                for (int i = 0; i < data.Length - 1; )
                {
                    buf1 = OneStringtoByte(bufdata[i]);
                    buf1 <<= 4;
                    buf1 |= OneStringtoByte(bufdata[i + 1]);
                    bdata.Add(buf1);
                    i += 2;
                }
            }
            else
            {
                byte buf1 = 0;
                for (int i = 0; i < data.Length - 2; )
                {
                    buf1 = OneStringtoByte(bufdata[i]);
                    buf1 <<= 4;
                    buf1 |= OneStringtoByte(bufdata[i + 1]);
                    bdata.Add(buf1);
                    i += 2;
                }
                bdata.Add(OneStringtoByte(bufdata[bufdata.Length - 1]));
            }
            return bdata.ToArray();
        }
        public byte OneStringtoByte(char i)
        {
            switch (i)
            {
                case '0': return 0;
                case '1': return 1;
                case '2': return 2;
                case '3': return 3;
                case '4': return 4;
                case '5': return 5;
                case '6': return 6;
                case '7': return 7;
                case '8': return 8;
                case '9': return 9;
                case 'a': return 0x0a;
                case 'b': return 0x0b;
                case 'c': return 0x0c;
                case 'd': return 0x0d;
                case 'e': return 0x0e;
                case 'f': return 0x0f;
                case 'A': return 0x0a;
                case 'B': return 0x0b;
                case 'C': return 0x0c;
                case 'D': return 0x0d;
                case 'E': return 0x0e;
                case 'F': return 0x0f;
                default: return 0;
            }
        }
        #endregion