如何将JSON映射到.NET类

Question

I want to map this JSON into a .NET class. How can I map this JSON data into a class? Please suggest how. Here is the json:

{"results": [
   "43853",
   "43855",
   "43856",
   "43857",
   {
     "questionType": 3,
     "choiceAnswers": [123]   
   }
 ]}

Answer 1

The easiest solution is to use Visual Studio Edit > Paste Special > Paste Json As Classes . But as your json is an array of different objects the .NET class will just be

public class JsonDto
{
    public List<object> Results { get; set; }
}

A list of objects will be painful to work with so I recommend that you to use a typed model but then you need to specify you need to define the values, here's an example

{"results": [
     {
       "key1":"43853",
       "key2":"43855",
       "key3":"43856",
       "key4":"43857",
       "question": {
         "questionType": 3,
         "choiceAnswers": [123]   
       }
     }
 ]};

 public class JsonDto
 {
    public List<ResultDto> Results { get; set; }
 }
 public class ResultDto
 {
    public string Key1 { get; set; }
    public string Key2 { get; set; }
    public string Key3 { get; set; }
    public string Key4 { get; set; }
    public QuestionDto Question { get; set; }
 }
 public class QuestionDto
 {
    public int QuestionType { get; set; }
    public List<int> ChoiceAnswers { get; set; }
 }

Answer 2

You can use online converter to convert json data to c# models http://json2csharp.com For your json it would be something like this.

public class RootObject
{
    public List<object> results { get; set; }
}