使用HttpClient C＃获取空值

Question

在此处发出HttpClient请求：

private static void PostPersonInfoAsync1()
{
    Person person = new Person
    {
        Id = "999",
        CompanyName = "ABC",
        Department = "CDE",
        DisplayName = "XYZ",
        JobTitle = "manager",
        OfficeLocation = "zzz"
    };

    HttpClient client = new HttpClient();
    var myContent = JsonConvert.SerializeObject(person);
    Console.WriteLine(myContent);
    //var buffer = System.Text.Encoding.UTF8.GetBytes(myContent);
    var stringContent = new StringContent(myContent);

    stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
    var result = client.PostAsync("http://localhost:52810/Person/AddPerson", stringContent).Result;
}

这是端点命中的位置：

    [HttpPost]
    public JsonResult AddPerson(Person person)
    {
        System.Diagnostics.Debug.WriteLine("ADD PERSON ::::" + person.ToString());

        string jsonIsSuccess = "";
        //System.Diagnostics.Debug.WriteLine(jsonPerson.ToString() + "  is being added");
        //Person person = m_jsonConverter.ConvertToObject(jsonPerson.ToString());
        if (!(person.Id == null || person.JobTitle == null || person.OfficeLocation == null ||
            person.Department == null || person.DisplayName == null || person.CompanyName == null))
        {
            if (m_personRepository.AddPerson(person))
            {
                jsonIsSuccess = "{" +
                    "\"status\":\"success\"" +
                    "}";
            }
        }
        else
        {
            jsonIsSuccess = "{" +
                "\"status\":\"failed\"" +
                "}";
        }

        return new JsonResult(jsonIsSuccess);
    }

在下一行的所有参数中获取空值

    System.Diagnostics.Debug.WriteLine("ADD PERSON ::::" + person.ToString());

当我使用Postman检查时，一切都很好。但是当我使用HttpClient创建控制台应用程序时，它无法正常工作。