C# 16进制字符串转ASCII字符串，字节数组转16进制字符串

1. 16进制字符串转ASCII字符串，先转字节数组再转ASCII

        /// <summary>
        /// 16进制字符串先转字节数组
        /// </summary>
        /// <param name="strHEX">16进制字符串</param>
        /// <returns>字节数组</returns>
        public static byte[] HexstringToBytes(string strHEX)
        {
            if (strHEX.Length == 0)
            {
                return null;
            }
            strHEX = strHEX.Length % 2 == 0 ? strHEX : "0" + strHEX;

            byte[] Barr = new byte[strHEX.Length / 2];
            for (int i = 0; i < Barr.Length; i++)
            {

                Barr[i] = Convert.ToByte(strHEX.Substring(i * 2, 2), 16);

            }
            return Barr;
        }


        /// <summary>
        /// 16进制字符串转ASCII码字符串
        /// </summary>
        /// <param name="strHEX">16进制字符串</param>
        /// <returns>字符串</returns>   
        public static string getHexASCIItoStr(string strHEX)
        {
            byte[] Barry = HexstringToBytes(strHEX);
            System.Text.ASCIIEncoding asciiEncoing = new System.Text.ASCIIEncoding();
            string strstr = asciiEncoing.GetString(Barry);
            Console.WriteLine(strstr);
            return strstr;
        }

2. 字节数组转16进制字符串

            //字节数组转16进制字符串
            StringBuilder builder = new StringBuilder();
            for (int i = 0; i < bResult.Length; i++)
            {
                builder.Append(string.Format("{0:X2} ", bResult[i]));
            }
            strOut = builder.ToString().Trim();