1、  汉字转十六进制UNICODE编码字符串

        /// <summary>

        ///

        /// </summary>

        /// <param name="character"></param>

        /// <returns></returns>

        public string CharacterToCoding(string character)

        {

            string coding = "";

            for (int i = 0; i < character.Length; i++)

            {

                byte[] bytes = System.Text.Encoding.Unicode.GetBytes(character.Substring(i, 1));

                //取出二进制编码内容  

                string lowCode = System.Convert.ToString(bytes[0], 16);

                //取出低字节编码内容（两位16进制）  

                if (lowCode.Length == 1)

                {

                    lowCode = "0" + lowCode;

                }

                string hightCode = System.Convert.ToString(bytes[1], 16);

                //取出高字节编码内容（两位16进制）  

                if (hightCode.Length == 1)

                {

                    hightCode = "0" + hightCode;

                }

                coding += (hightCode + lowCode);

            }

            return coding;

        }

  2、  十六进制UNICODE编码字符串 转 汉字    

        /// <summary>

        /// //

        /// </summary>

        /// <param name="text"></param>

        /// <returns></returns>

        public string UnicodeToCharacter(string text)

        {

            byte[] arr = HexStringToByteArray(text);

            System.Text.UnicodeEncoding converter = new System.Text.UnicodeEncoding();

            string str = converter.GetString(arr);

            return str;

        }