static void Main(string[] args)
        {
            ProductDBContext context = new ProductDBContext();
            var product  = context.Products;
            var product1 = product.Add(new Product()
            {
                ProductID  = 1,
                Name       = "Badam",
                Price      = 99.90,
                Quantity   = "250ml",
                CategoryID = 1
            });
            var product2 = product.Add(new Product()
            {
                ProductID  = 2,
                Name       = "Coffee",
                Price      = 89.90,
                Quantity   = "250ml",
                CategoryID = 2
            });
            var product3 = product.Add(new Product()
            {
                ProductID  = 3,
                Name       = "Cold Coffee",
                Price      = 79.90,
                Quantity   = "550ml",
                CategoryID = 3
            });

            var Category = context.Categories;

            var Category1 = Category.Add(new category()
            {
                CategoryID = 3, Name = "Orange mint"
            });
            var Category2 = Category.Add(new category()
            {
                CategoryID = 3, Name = "Lemon mint"
            });

            context.SaveChanges();
        }
        static void Main(string[] args)
        {
            ProductDBContext context = new ProductDBContext();
            var product  = context.Products;
            var product1 = context.Products.Add(new Product()
            {
                ProductID  = 1,
                Name       = "badam Drink",
                Price      = 99.99,
                Quantity   = "500 ml",
                CategoryID = 1
            });
            var product2 = context.Products.Add(new Product()
            {
                ProductID  = 2,
                Name       = "Coffe Drink",
                Price      = 59.99,
                Quantity   = "250 ml",
                CategoryID = 1
            });
            var product3 = context.Products.Add(new Product()
            {
                ProductID  = 3,
                Name       = "Coke Drink",
                Price      = 49.99,
                Quantity   = "200 ml",
                CategoryID = 1
            });
            var categories = context.Categories;
            var category1  = categories.Add(new Category()
            {
                CategoryID = 1, Name = " Beverages",
            });

            context.SaveChanges();
        }