Пример #1
0
        static void CreateData()
        {
            //Equivalent to INSERT INTO...
            var db = new SafariContext();

            var lion = new SeenAnimals
            {
                Species            = "Lion",
                CountOfTimesSeen   = 4,
                LocationOfLastSeen = "Desert",
            };

            db.Animal.Add(lion);

            var tiger = new SeenAnimals
            {
                Species            = "Tiger",
                CountOfTimesSeen   = 2,
                LocationOfLastSeen = "Jungle"
            };

            db.Animal.Add(tiger);

            var bear = new SeenAnimals
            {
                Species            = "Bear",
                CountOfTimesSeen   = 1,
                LocationOfLastSeen = "Jungle"
            };

            db.Animal.Add(bear);


            db.SaveChanges();
        }
Пример #2
0
        static void ReadData()
        {
            var db          = new SafariContext();
            var countAnimoo = db.Animal.Where(animoo => animoo.Species == "Lion" || animoo.Species == "Tiger" || animoo.Species == "Bear").Sum(animoo => animoo.CountOfTimesSeen);

            Console.WriteLine(countAnimoo);
        }
Пример #3
0
        static void DeleteData()
        {
            var db           = new SafariContext();
            var deleteAnimoo = db.Animal.FirstOrDefault(animoo => animoo.LocationOfLastSeen == "Desert");

            db.Animal.Remove(deleteAnimoo);

            db.SaveChanges();
        }
Пример #4
0
        static void UpdateData()
        {
            var db = new SafariContext();

            db.SaveChanges();
        }