Question

我得到了这个回复。如何去除JSON？

[{
    "NoOfRecord":"2",
    "data":[ 
    {
    "name": "Pinky",
    "Id": "8989898",
    "PhoneNumber": "918934",
    "status": "Success",
    },
    {
    "name": "Kajol",
    "Id": "2345678",
    "PhoneNumber": "915566",
    "status": "Fail",
    }
    ]
}]

我试过这样，但收到错误。

我为此创建了2个类。

public class JsonResult2
{
    public string NoOfRecord{ get; set; }
    public JsonData Data { get; set; }
}

public class JsonData 
{
   public string name{ get; set; }
   public string Id{ get; set; }
   public string PhoneNumber{ get; set; }
   public string status{ get; set; }
}

当我这样写作时，会收到错误。

 var JsonData = JsonConvert.DeserializeObject<JsonResult2>(ResponseJson);

我正在使用Newtonsoft的库（使用Newtonsoft.Json;）

如何访问所有name，id，phonenumber和status。

我将获得的响应存储在名为ResponseJson的字符串中。

错误：无法将JSON数组反序列化为类型＆＃39; JsonResult2＆＃39;

Answer 1

First of all, your JSON string is invalid. It has two commas as shown below which shouldn't be there:

[{
    "NoOfRecord":"2",
    "data":[ 
    {
    "name": "Pinky",
    "Id": "8989898",
    "PhoneNumber": "918934",
    "status": "Success", <-- This comma shouldn't be there
    },
    {
    "name": "Kajol",
    "Id": "2345678",
    "PhoneNumber": "915566",
    "status": "Fail", <-- This comma shouldn't be there
    }
    ]
}]

Once those commas are removed, your JSON is valid. Here's how it would look:

[{
    "NoOfRecord":"2",
    "data":[ 
    {
    "name": "Pinky",
    "Id": "8989898",
    "PhoneNumber": "918934",
    "status": "Success"
    },
    {
    "name": "Kajol",
    "Id": "2345678",
    "PhoneNumber": "915566",
    "status": "Fail"
    }
    ]
}]

Now the outermost brackets [] mean that you are receiving an array, not object. So your de-serialization syntax should be:

var JsonData = JsonConvert.DeserializeObject<List<JsonResult2>>(ResponseJson);

Then you need to ensure that the properties in the JSON match those of your entities. Also note the two [] square brackets against data in the JSON. That means you are expecting an array, not object. That means Data should be List<JsonData> instead of JsonData. So you'd need to update JsonResult2 as follows:

public class JsonResult2
{
    public string NoOfRecord { get; set; }
    public List<JsonData> Data { get; set; }
}

Also, if you are certain that NoOfRecord is a number, you might want to change the type of NoOfRecord within JsonResult2 to int.

如何在C＃中对json进行deserilize

1 个答案: