public MainContext(DbContextOptions <MainContext> options) : base(options) { if (!Dishes.Any()) { Dishes.Add(new Dish() { Name = "Plate" }); Dishes.Add(new Dish() { Name = "Fork" }); Dishes.Add(new Dish() { Name = "Knife" }); SaveChanges(); } if (!Fruits.Any()) { Fruits.Add(new Fruit() { Name = "Apple" }); Fruits.Add(new Fruit() { Name = "Orange" }); Fruits.Add(new Fruit() { Name = "Kiwi" }); SaveChanges(); } if (!Vegetables.Any()) { Vegetables.Add(new Vegetable() { Name = "Cucumber" }); Vegetables.Add(new Vegetable() { Name = "Tomato" }); Vegetables.Add(new Vegetable() { Name = "Carrot" }); SaveChanges(); } }