BaseController.cs

public abstract class BaseController<T> : Controller where T : BaseController<T>
    {
        private  DbCachingService _dbCs;

        protected DbCachingService DbCS  => _dbCs?? (_dbCs= (DbCachingService)HttpContext.RequestServices.GetService(typeof (DbCachingService)));

        private ApplicationDbContext _dbContext;

        protected ApplicationDbContext DbContext => _dbContext ?? (_dbContext = (ApplicationDbContext)HttpContext.RequestServices.GetService(typeof(ApplicationDbContext)));
              

    }

SessionManageController.cs

public class SessionManageController : BaseController<SessionManageController>
    {
        const string SessionKeyName = "_Name";
        const string SessionKeyYearsMember = "_YearsMember";
        const string SessionKeyDate = "_Date";

        private readonly ApplicationDbContext _dbContext;


        public SessionManageController(ApplicationDbContext dbContext)
        {
            _dbContext = dbContext;
        }

        public IActionResult Index()
        {


            if (base.DbContext == _dbContext) return Content("objects are the same");

                var name = HttpContext.Session.GetString(SessionKeyName);
            var yearsMember = HttpContext.Session.GetInt32(SessionKeyYearsMember);

         //   return Content($"Name: ,  Membership years: \"{yearsMember}\"");
              return Content($"Name: {base.DbCS.FirstPerson.Name},  Membership years: \"{yearsMember}\"");
        }
       

        public IActionResult SetSessionVariables()
        {
            HttpContext.Session.SetString(SessionKeyName, "Rick");
            HttpContext.Session.SetInt32(SessionKeyYearsMember, 3);
            return RedirectToAction("Index");
        }
    }
}