Newtonsoft.Json.Linq.JArray'不包含'结果'的定义

Question

我正在尝试阅读Rest API，一切正常，我从api获取数据，但它在线上失败，它说if（response.Data.result == null）。我收到一条错误，说'Newtonsoft.Json.Linq.JArray'不包含'result'的定义。任何帮助将受到高度赞赏。这是代码：

        try
        {
            var response = (HttpWebResponse)request.GetResponse();
            if (response.StatusCode.ToString() == "OK")
            {
                var responseStream = response.GetResponseStream();
                StreamReader _answer = new StreamReader(responseStream);
                string result = _answer.ReadToEnd();
                var responseData = JsonConvert.DeserializeObject<dynamic>(result);



                if (responseData.result == null || String.IsNullOrEmpty(responseData.result.ToString()))                    
                    return null;
                else
                {
                    var contactData = JsonConvert.DeserializeObject<Contact>(responseData.result.ToString());
                    return contactData;
                }
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }

Answer 1

您可以直接检查解析的对象是否为null：

if (responseData == null && String.IsNullOrEmpty(responseData.ToString()))       
                return null;