Наследование: System.Windows.Forms.Form
        private void productDataGridView_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.RowIndex > -1)
            {
                Product product = (Product)productDataGridView.Rows[e.RowIndex].DataBoundItem;

                productDetailForm = new ProductDetailView(product.ProductRelativeUri);
                productDetailForm.Visible = true;

            }
        }