public IActionResult Add([FromBody] Location location)
        {
            var service = new Covid19Service(this._context);

            service.Add(location);

            return(Ok("result creted."));
        }
        public Covid19Controller(Covid19Service covid19Service)

        {
            _covid19Service = covid19Service;
        }
        public async Task <IEnumerable <Location> > Get()
        {
            var service = new Covid19Service(this._context);

            return(await service.GetAll());
        }