internal override async Task Action()
        {
            IHospitalList hospitalList = new HospitalListDAO();
            await hospitalList.GetHospitalByDept(location, dept_id, this);

            if (hosps != null)
            {
                viewCallback.ReadViewSuccess(hosps);
            }
            else
            {
                viewCallback.ReadViewFail();
            }

            ;
        }