public IActionResult Get(int id)
        {
            _log4net.Info("Get by id is called!");
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var tempbill = _context.GetBillById(id);

            _log4net.Info("Data of the id returned!");

            if (tempbill == null)
            {
                return(NotFound());
            }

            return(Ok(tempbill));
        }