<asp:GridView ID="ProductsGrid" runat="server"
    AutoGenerateColumns="False" DataKeyNames="ProductID"
    DataSourceID="AllProductsDataSource" EnableViewState="False">
    <Columns>
        <asp:CommandField ShowSelectButton="True" />
        <asp:BoundField DataField="ProductName"
         HeaderText="Product" SortExpression="ProductName" />
        <asp:BoundField DataField="UnitPrice"
          DataFormatString="{0:c}" HeaderText="Unit Price"
          HtmlEncode="False" SortExpression="UnitPrice" />
    </Columns>
</asp:GridView>