誰說.net core不好動態訪問webservice？看這篇文章，C#快速實現動態訪問webservice，相容.net framework和.net core+

  /// <summary>
  /// 調用Web服務
  /// Calls a web service.
  /// </summary>
  /// <param name="url">服務URL / Service URL</param>
  /// <param name="apiName">API名稱 / API name</param>
  /// <param name="expireSecond">過期時間（秒）/ Expiration time in seconds</param>
  /// <param name="parameters">調用參數 / Invocation parameters</param>
  /// <returns>調用結果 / Invocation result</returns>
  public OpenToolResult<string> CallWebservice(string url, string apiName,long expireSecond = 86400,params object[] parameters)
  {
      OpenToolResult<string> result = new HttpExtensions.OpenToolResult<string>();

      CheckExpireTime(url, apiName, expireSecond);

      var wsInfo = OpenWebserviceInfo.OpenWebservice.FirstOrDefault(x => x.WebserviceUrl == url && x.OperationName == apiName);

      if (wsInfo == null)
      {
          result.IsSuccess = false;
          result.Message = "本地無法載入遠程webservice服務。Cannot load the remote webservice locally.";
          return result;
      }

      if ((parameters == null && wsInfo.ParameterNames.Count > 0) || (parameters!=null && parameters.Length != wsInfo.ParameterNames.Count))
      {
          result.IsSuccess = false;
          result.Message = $"遠程服務介面參數個數和你傳入的參數個數不匹配。遠程服務參數個數:{wsInfo.ParameterNames.Count}, 本地傳入參數個數： {parameters?.Length ?? 0}。Parameter count mismatch: remote service has {wsInfo.ParameterNames.Count}, provided {parameters?.Length ?? 0}.";
          return result;
      }


      Dictionary<string, string> dicParams = new Dictionary<string, string>();
      if (parameters != null)
      {
          for (int i = 0; i < wsInfo.ParameterNames.Count; i++)
          {
              dicParams.Add(wsInfo.ParameterNames[i], XmlConvertor.SerializeObjectToXml(parameters[i]));
          }
      }
      var response = InvokeService(url, apiName, dicParams,wsInfo.Namespace);

      result.Result = response;
      result.IsSuccess = true;
      result.Message = "success";

      return result;
  }