MyDbContext.cs

    public class MyDbContext : DbContext
    {
        private readonly ILoggerFactory _loggerFactory;
        public MyDbContext(DbContextOptions<MyDbContext> options, ILoggerFactory loggerFactory) : base(options)
        {
            _loggerFactory = loggerFactory;
        }

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            //1
            optionsBuilder.UseLoggerFactory(_loggerFactory);
            base.OnConfiguring(optionsBuilder);
        }

        public DbSet<Product> Products { get; set; }
        public DbSet<Category> Categories { get; set; }
    }