以‘-’分割，截取字符串，并将其转换为16进制的byte数组

            string s = "02-56-00-FF-FF-0B-4F-21-14-A2-1C-D5-4C-37-9B-CD";
            string[] ss = s.Split('-');
            byte[] b = new byte[ss.Length];
            for (int i = 0; i < ss.Length; i++)
            {
                b[i] = (byte)Convert.ToInt32(ss[i], 16);
            }