Convert JSON to a class c#

Question

My application receives 2 JSON. One of which is:

{
  "topics": {
"test1": {
  "topic": "test1",
  "partitions": {
    "0": {
      "partition": 0,
      "next_offset": 8265537,
      "app_offset": 8265537,
      "stored_offset": 8265537,
      "commited_offset": 8265537,
      "committed_offset": 8265537,
      "eof_offset": 8265537,
      "lo_offset": 8261962,
      "hi_offset": 8265537,
      "consumer_lag": 0
    },
    "1": {
      "partition": 1,
      "next_offset": 9207622,
      "app_offset": 9207622,
      "stored_offset": 9207622,
      "commited_offset": 9207622,
      "committed_offset": 9207622,
      "eof_offset": 9207622,
      "lo_offset": 9203938,
      "hi_offset": 9207622,
      "consumer_lag": 0
    },
    "2": {
      "partition": 2,
      "next_offset": 7954425,
      "app_offset": 7954425,
      "stored_offset": 7954425,
      "commited_offset": 7954425,
      "committed_offset": 7954425,
      "eof_offset": 7954425,
      "lo_offset": 7950785,
      "hi_offset": 7954425,
      "consumer_lag": 0
      }
     }
   }
 }
  }

And the other is test2 with "topic" as "test2". And the topic name differentiates both the JSON.

One way I basically converted it into dynamic object and loop through the JSON. But I want to create one common class for both JSON to convert it into. My only confusion is how can create a generic class to deserialize both the JSON.

Because right now I am creating two classes like :

 public class Root
 {
   public Topics topics { get; set; }
 }

 public class Topics
 {
    public Test1 test1 { get; set; }
 }

 public class Test1
 {
   public string topic { get; set; }
   public Partitions partitions { get; set; }
 }

And same way for test2.

Any help?

Answer 1

List Sample: - JSON object & class object like below:

    {
      "topics":[{
        "topic":"test1",
        "partition":{...}
        },{
        "topic":"test2",
        "partition":{...}
       }]
    }


    class Root
    {
        public List<Topics> topics { get; set; }
    }
    class Topics
    {
        public string topic { get; set; }
        public Partitions partitions { get; set; }
    }

Specify Sample: - JSON object & class object like below:

    {
      "topics":{
        "test1":{
        "topic":"test1",
        "partition":{...}
        },
        "test2":{
        "topic":"test2",
        "partition":{...}
       }]
    }

    class Root
    {
        public Test topics{ get; set; }
    }
    class Test{
        public Topics test1{get;set;} 
        public Topics test2{get;set;} 
    }
    class Topics
    {
        public string topic { get; set; }
        public Partitions partitions { get; set; }
    }

Answer 2

I'd suggest using Dictionary<> types for keys that will change like the test1 value and the partition numbers. For example, something like this should work well:

public class Root
{
    public Dictionary<string, Test> Topics { get; set; }
}

public class Test
{
    public string Topic { get; set; }
    public Dictionary<int, Partition> Partitions { get; set; }
}

public class Partition
{
    [JsonProperty("partition")]
    public int PartitionNo { get; set; }
    [JsonProperty("next_offset")]
    public int NextOffset { get; set; }

    // etc...
}

And deserialise with:

var result = JsonConvert.DeserializeObject<Root>(Json);