using System;

using System.Collections.Generic;

using System.Linq;

using System.Text.Json;

​

public class Program

{

    public static void Main()

    {

        var testRecords = new List<TestRecord>()

        {

            new TestRecord

            {

                Status = 1,

                Data = "example-1"

            },

            new TestRecord

            {

                Status = 1,

                Data = "example-2"

            },

            new TestRecord

            {

                Status = 1,

                Data = "example-3"

            },

            new TestRecord

            {

                Status = 2,

                Data = "example-4"

            },

        };

        foreach (var testRecord in testRecords.Where(x => x.Status == 1))

        {

            testRecord.Status = 2;

            Console.WriteLine($"Processed record {testRecord.Data}");

        }

​

        Console.WriteLine(JsonSerializer.Serialize(testRecords));

    }

​

    public class TestRecord

    {

        public int Status { get; set; }

        public string Data { get; set; }

    }

}