using System.Threading.Tasks;

using Microsoft.Extensions.Logging;

public class HelloWorld {

    public static void Main(string[] args) {

        ILoggerFactory loggerFactory = LoggerFactory.Create(builder => builder.AddConsole().AddSimpleConsole(options => options.IncludeScopes = true));

        ILogger logger = loggerFactory.CreateLogger<HelloWorld>();

        logger.LogInformation("Начало");

        async Task Handler1() {

            using (logger.BeginScope("{Имя}", "Вася")) 

            {

            using (logger.BeginScope("{Имя}", "Женя")) 

                {

                    await Task.Delay(500);

                    logger.LogInformation("Я покушал." + System.DateTime.Now.ToString());

                    await Task.Delay(500);

                }

            }

        }

        async Task Handler2() {

            using (logger.BeginScope("{Имя}", "Петя")) 

            {

                await Task.Delay(500);

                logger.LogInformation("Я поспал." + System.DateTime.Now.ToString());

                await Task.Delay(500);

            }

        }

        var task1 = Handler1();

        var task2 = Handler2();

        Task.WaitAll(task1, task2);

        logger.LogInformation("Конец");

    }

}

​