JSON反序列化后对象数量正确，但都是空白答案

【问题标题】：Correct number of objects after JSON deserialization, but they are all blankJSON反序列化后对象数量正确，但都是空白
【发布时间】：2018-04-14 05:43:57
【问题描述】：

Send Grid 退回 API 会返回一个类似于此的列表：

"[
     {\"created\":1487173664,\"email\":\"lklklk@kkk.com\",\"reason\":\"550 No Such User Here \",\"status\":\"550\"}
    ,{\"created\":1487169530,\"email\":\"bb@hotmail.com\",\"reason\":\"550 Requested action not taken: mailbox unavailable \",\"status\":\"550\"}
    ,{\"created\":1487095343,\"email\":\"lsdkjf@hotmail.com\",\"reason\":\"550 Requested action not taken: mailbox unavailable \",\"status\":\"550\"}
    ,{\"created\":1487093087,\"email\":\"sldf@hotmail.com\",\"reason\":\"550 Requested action not taken: mailbox unavailable \",\"status\":\"550\"}
    ,{\"created\":1487085008,\"email\":\"sdlkfj@hotmail.com\",\"reason\":\"550 Requested action not taken: mailbox unavailable \",\"status\":\"550\"}
    ,{\"created\":1487082934,\"email\":\"mickey.mouse@disney.com\",\"reason\":\"550 Invalid recipient <mickey.mouse@disney.com> (#5.1.1) \",\"status\":\"550\"}
]"

使用以下类，我尝试反序列化该 JSON（尝试使用和不使用 [DataMember] 装饰，因为序列化可以正常工作）：

[DataContract(Name = "SendGridBounce")]
public class SendGridBounce
{
    [DataMember]
    public int Created { get; set; }
    [DataMember]
    public string Email { get; set; }
    [DataMember]
    public string Reason { get; set; }
    [DataMember]
    public string Status { get; set; }
}

[CollectionDataContract(Name = "SendGridBounceList")]
public class SendGridBounceList : List<SendGridBounce>
{
}

我就是这样做的：

var client = new SendGridClient("some API key here");
string queryParams = String.Format(CultureInfo.InvariantCulture, "{{ 'end_time': {0},  'start_time': 1 }}", DateTimeOffset.UtcNow.ToUnixTimeSeconds());
var response = Task.Run(() => client.RequestAsync(SendGridClient.Method.GET, urlPath: "suppression/bounces", queryParams: queryParams)).Result;

DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(SendGridBounceList));
using (MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(response.Body.ReadAsStringAsync().Result)))
{
    SendGridBounceList bl = js.ReadObject(ms) as SendGridBounceList;

    foreach (var b in bl)
    {
        tbxOutput.Text += b.Created.ToString() + ", " + b.Status + ", " + b.Email + ", " + b.Reason + Environment.NewLine;
    }
}

最终结果是列表中的项与 SendGrid 返回的 JSON 中的项一样多，但每个项都未初始化 {0, null, null, null}。我做错了什么？

【问题讨论】：

这可能是您的属性名称的大小写。 JSON 中的属性是小写的。
@Amy 没有区别
@L.B 你能再详细一点吗？

标签： c# json deserialization .net-4.6.2

【解决方案1】：

解决方案是更改DataMember 装饰如下：

[DataContract(Name = "SendGridBounce")]
public class SendGridBounce
{
    [DataMember(Name ="created")]
    public int Created { get; set; }
    [DataMember(Name = "email")]
    public string Email { get; set; }
    [DataMember(Name = "reason")]
    public string Reason { get; set; }
    [DataMember(Name = "status")]
    public string Status { get; set; }
}

【讨论】：