public static void Main() { using (var db = new RadioactivityDbContext()) { RadioactiveProduct product = new RadioactiveProduct(); product.Radioactivity = 5; product.ProductName = "jfksdjgdlk"; db.RadioactiveProducts.Add(product); db.SaveChanges(); foreach (var radioactiveProduct in db.RadioactiveProducts) { Console.WriteLine(radioactiveProduct.ProductName); } } }