using System;

​

public class Program

{

    public static void Main()

    {

        var json = """

{

    "data": [

        {

            "key1": "Nfddf",

            "key2": 616,

            "key3": "D",

            "data": "<BusinessModel xmlns:xsi=...</BusinessModel>"

        },

        {

            "key1": "NDwep",

            "key2": 258,

            "key3": "F",

            "data": "<BusinessModel xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" />"

        },

        {

            "key1": "NDIVI",

            "key2": 374,

            "key3": "R",

            "data": "<BusinessModel xmlns:xsi=</BusinessModel>"

        }

    ]

}

""";

        Console.WriteLine("Newtonsoft deserialize");            

        var newtonResponse = Newtonsoft.Json.JsonConvert.DeserializeObject<GetResponse>(json);

        newtonResponse.Dump();

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine("System.Text.Json deserialize");  

        var systemResponse = System.Text.Json.JsonSerializer.Deserialize<GetResponse>(json);

        systemResponse.Dump();

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine();

        Console.WriteLine("System.Text.Json deserialize lowercase");    

        var systemLowerCaseResponse = System.Text.Json.JsonSerializer.Deserialize<GetResponseLowerCase>(json);

        systemLowerCaseResponse.Dump();

    }

}

​

public record GetResponse(Information[] Data);

public record Information(string Key1, int? Key2, string Key3, string Data);

​

// make the property names lowercase so they match with the json

public record GetResponseLowerCase(InformationLowerCase[] data);

public record InformationLowerCase(string key1, int? key2, string key3, string data);