public IActionResult CarpoolUpdate(string Name, string Description, int CarpoolId)
        {
            if (HttpContext.Session.GetInt32("LoggedInUserId") is null)
            {
                return(RedirectToAction("Index", "LoginReg"));
            }

            Carpool thisCarpool = dbContext.Carpools.Where(c => c.Id == CarpoolId).FirstOrDefault();

            thisCarpool.Name        = Name;
            thisCarpool.Description = Description;
            dbContext.Update(thisCarpool);
            dbContext.SaveChanges();
            return(RedirectToAction("CarpoolDefault", new { id = CarpoolId }));
        }