1, Use scenario

When we deserialize the JSON entity set, if the field is fixed, then we can simply serialize the entity set written by the corresponding field. For example:

{
    "data":[
            {
                "houseid": "210166268", 
                "city": "Tangshan", 
                "pv": "1"
            }
        ],
    "message": "Success"
}

But how do we deal with dynamic JSON data (without fixed fields), such as the following structure: is it silly? Because there is a time node, it is not fixed. Next, we will start to introduce how to deserialize the following format.

//Note that the following time nodes are not fixed, and we cannot correspond to the specified fields
{
    "content": {
        "20180123": [
            {
                "houseid": "210166268", 
                "city": "Tangshan", 
                "pv": "1"
            }, 
            {
                "houseid": "210181300", 
                "city": "Tangshan", 
                "pv": "1"
            }
        ],
        "20180124": [
            {
                "houseid": "210166268", 
                "city": "Tangshan", 
                "pv": "1"
            }
        ]
    }, 
    "message": "Success"
}

2, Dynamic entity set deserialization

Need to introduce: Newtonsoft.Json.

Let's say we want to sequence the house ID, city, PV information into a list. The code is as follows:

//Final target format
public class DataModel
{

 //Date string        
 public string DateStr { get; set; }

 //Daily information list
 public  List<EntityModel> EntityList { get; set; }
}

//data model
public class EntityModel
{
    public string HouseId { get; set; }

    public string City { get; set; }

    public string PV { get; set; }

    public override string ToString()
    {
        return HouseId +City +PV;
    }
}

2.1 treatment results

2.2 processing logic

//analysis
Newtonsoft.Json.Linq.JObject resultObject = Newtonsoft.Json.Linq.JObject.Parse(resultStr);

//Convert to list (get Content)
List<Newtonsoft.Json.Linq.JToken> listJToken = resultObject["content"].Children().ToList();

//ergodic
foreach (var item in listJToken)
{
    //Convert to key value pair format
    var temp_item = (Newtonsoft.Json.Linq.JProperty)item;
    Console.WriteLine("Name:" + temp_item.Name + "\nValue:"  + temp_item.Value );
    Console.WriteLine("------------------------------------------------------------------------");

    //TODO: you should know the following steps. If you want to get the list < entitymodel > type, you can serialize the value directly.
    //var temp_list = JsonConvert.DeserializeObject<List<EntityModel>>(temp_item.Value.ToString());
}