protected void btnSubmit_Click(object sender, EventArgs e) { ProductsModel productsModel = new ProductsModel(); Products products = GreateProduct(); if (!String.IsNullOrWhiteSpace(Request.QueryString["id"])) { int id = Convert.ToInt32(Request.QueryString["id"]); lblResult.Text = productsModel.UpdateProduct(id, products); } else { lblResult.Text = productsModel.InsertProduct(products); } lblResult.Text = productsModel.InsertProduct(products); }