using System;

using System.Collections.Generic;

using System.Text.Json;

using Microsoft.Extensions.DependencyInjection;

using Microsoft.Extensions.Logging;

​

using var services = new ServiceCollection()

    .AddLogging(builder => builder.AddJsonConsole(options => {

        options.IncludeScopes = true;

        options.JsonWriterOptions = new JsonWriterOptions { Indented = true };

    }))

    .AddTransient<MyClass>()

    .BuildServiceProvider();

​

var myClass1 = services.GetRequiredService<MyClass>();

var myClass2 = services.GetRequiredService<MyClass>();

​

myClass1.MyMethod();

myClass2.MyMethod();

​

public class MyClass : IDisposable

{

    private static int instanceCount = 0;

    private ILogger<MyClass> _logger;   

    private int _instance;

    private IDisposable _loggingScope;

​

    public MyClass(ILogger<MyClass> logger)

    {

        _instance = ++instanceCount;

        _logger = logger;

        _loggingScope = _logger.BeginScope(new Dictionary<string, object>

        {

            ["Instance"] = _instance,

            ["Source"] = "Constructor"

        });

        _logger.LogInformation("Log from constructor");

    }

​

    public void MyMethod()

    {

        using(_logger.BeginScope(new Dictionary<string, object>

        {

            ["Instance"] = _instance,

            ["Source"] = "MyMethod"

        }))

        {           

            _logger.LogInformation("Log from MyMethod");

        }

    }

    public void Dispose()

    {

        _loggingScope?.Dispose();

    }

}