#region Base64编码解码        /// <summary>        /// Base64加密        /// </summary>        /// <param name="codeName">加密采用的编码方式</param>        /// <param name="source">待加密的明文</param>        /// <returns></returns>        public static string EncodeBase64(Encoding encode, string source)        {            string strencode = "";            byte[] bytes = encode.GetBytes(source);            try            {                strencode = Convert.ToBase64String(bytes);            }            catch            {                strencode = source;            }            return strencode;        }        /// <summary>        /// Base64加密，采用utf8编码方式加密        /// </summary>        /// <param name="source">待加密的明文</param>        /// <returns>加密后的字符串</returns>        public static string EncodeBase64(string source)        {            return EncodeBase64(Encoding.UTF8, source);        }        /// <summary>        /// Base64解密        /// </summary>        /// <param name="codeName">解密采用的编码方式，注意和加密时采用的方式一致</param>        /// <param name="result">待解密的密文</param>        /// <returns>解密后的字符串</returns>        public static string DecodeBase64(Encoding encode, string result)        {            string decode = "";            byte[] bytes = Convert.FromBase64String(result);            try            {                decode = encode.GetString(bytes);            }            catch            {                decode = result;            }            return decode;        }        /// <summary>        /// Base64解密，采用utf8编码方式解密        /// </summary>        /// <param name="result">待解密的密文</param>        /// <returns>解密后的字符串</returns>        public static string DecodeBase64(string result)        {            return DecodeBase64(Encoding.UTF8, result);        }        #endregion