C# 參數按照ASCII碼從小到大排序MD5加密

        #region 1、獲取參數GetSignParamSrc
        /// <summary>
        /// 邏輯
        /// 1、將參數按照首字母進行排序 
        /// 2、拼接參數=密鑰(appSecret)+除密鑰外排好序的參數串+密鑰(appSecret)
        /// 3、將參數轉換爲MD5格式並轉換爲大寫
        /// 
        /// </summary>
        private string GetSignParamSrc(EpodBackDataModel epodBack)
        {
            string paramSrcStr = string.Empty;

            string paramMsd5Str = string.Empty;

            if (epodBack!=null)
            {
                Dictionary<string, string> dics = new Dictionary<string, string>();
                dics.Add("vendorCode", epodBack.VendorCode);
                dics.Add("asnId", epodBack.AsnId);
                dics.Add("poId", epodBack.PoId);
                dics.Add("putawayTime", epodBack.PutAwayTime.ToString());
                paramSrcStr = GetParamSrc(dics);
            }

            if (!string.IsNullOrEmpty(paramSrcStr))
            {
                paramMsd5Str= GetMD52(paramSrcStr);
            }
            return paramMsd5Str;
        }

        #endregion

        #region 2、 參數按照ASCII碼從小到大排序
        /// <summary>
        /// 參數按照ASCII碼從小到大排序（字典序）
        /// </summary>
        /// <param name="paramsMap">參數</param>
        /// <returns></returns>
        private string GetParamSrc(Dictionary<string, string> paramsMap)
        {

            var vDic = paramsMap.OrderBy(x => x.Key, new ComparerString()).ToDictionary(x => x.Key, y => y.Value);
            var str = new StringBuilder();
            foreach (var kv in vDic)
            {
       
                var pvalue = kv.Value;
                if (string.IsNullOrEmpty(pvalue)) continue;
                str.Append(pvalue);
            }

            var result = str.ToString();
            return result;
        }

        #endregion

        #region 3、 MD5簽名算法
        /// <summary>
        /// MD5 32爲運算
        /// </summary>
        /// <param name="myString">需要加密的Str</param>
        /// <returns></returns>
        public static string GetMD52(string myString)
        {
            string byte2String = null;
            if (!string.IsNullOrWhiteSpace(myString))
            {
                MD5 md5 = new MD5CryptoServiceProvider();
                byte[] fromData = Encoding.UTF8.GetBytes(myString);
                byte[] targetData = md5.ComputeHash(fromData);
                for (int i = 0; i < targetData.Length; i++)
                {
                    byte2String = byte2String + targetData[i].ToString("x2");
                }
                byte2String = byte2String.ToUpper(); //轉化爲大寫
            }
            else
            {
                LoggerFactory.Error("沒有獲取到字符串請檢查是否有誤");
            }

            return byte2String;
        }

        #endregion

  	    #region 對比
        /// <summary>
        /// 對比
        /// </summary>
        public class ComparerString : IComparer<String>
        {
            public int Compare(String x, String y)
            {
                return string.CompareOrdinal(x, y);
            }
        }
        #endregion