protected void btnSubmit_Click(object sender, EventArgs e)
        {
            if (uploadProductImage.PostedFile != null)
            {
                SaveProductPhoto();

                Logic.ShoppingCart shoppingCart = new Logic.ShoppingCart()
                {
                    ProductName = txtProductName.Text,
                    ProductImage = "~/ProductImages/" + uploadProductImage.FileName,
                    ProductPrice = txtProductPrice.Text,
                    ProductDescritpion = txtProductDescription.Text,
                    CategoryId = Convert.ToInt32(categoryDropDownList.SelectedValue),
                };

                shoppingCart.AddNewProduct(shoppingCart);

                ClearText();
            }
            else
            {
                 Response.Write("<script>alert('Need upload image for creating new product.')</script>");
            }
        }
        protected void btnSubmit_Click(object sender, EventArgs e)
        {
            if (uploadProductImage.PostedFile != null)
            {
                SaveProductPhoto();

                Logic.ShoppingCart shoppingCart = new Logic.ShoppingCart()
                {
                    ProductName        = txtProductName.Text,
                    ProductImage       = "~/ProductImages/" + uploadProductImage.FileName,
                    ProductPrice       = txtProductPrice.Text,
                    ProductDescritpion = txtProductDescription.Text,
                    CategoryId         = Convert.ToInt32(categoryDropDownList.SelectedValue),
                };

                shoppingCart.AddNewProduct(shoppingCart);

                ClearText();
            }
            else
            {
                Response.Write("<script>alert('Need upload image for creating new product.')</script>");
            }
        }