// GET: Campground
        public ActionResult Index(int id)
        {
            CampgroundSqlDAL  campgroundDAL  = new CampgroundSqlDAL(connectionString);
            List <Campground> campgroundList = campgroundDAL.ListCampgrounds(id);

            return(View("Index", campgroundList));
        }
        public void GetParksTest()
        {
            //Arrange
            CampgroundSqlDAL campgroundSqlDal = new CampgroundSqlDAL(connectionString);

            //Act
            List <Campground> campground = campgroundSqlDal.ListCampgrounds(1);

            //Assert
            Assert.IsNotNull(campground);
            Assert.AreEqual(numberOfCampgrounds, campground.Count);
        }