protected void btnSubmit_Click(object sender, EventArgs e)
 {
     Logic.ShoppingCart s = new Logic.ShoppingCart
     {
         CategoryName = txtCategoryName.Text
     };
     s.AddNewCategory(s);
     txtCategoryName.Text = string.Empty;
     Response.Redirect("~/Admin/AddNewProduct.aspx");
 }
 private void GetCategory()
 {
     Logic.ShoppingCart shoppingCart = new Logic.ShoppingCart();
     System.Data.DataTable dataTable = shoppingCart.GetCategory();
     if (dataTable.Rows.Count > 0)
     {
         categoryDropDownList.DataValueField = "CategoryId";
         categoryDropDownList.DataTextField = "CategoryName";
         categoryDropDownList.DataSource = dataTable;
         categoryDropDownList.DataBind();
     }
 }
        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>");
            }
        }