Gridview刪除時做確認

<asp:TemplateField ShowHeader="False"> <ItemTemplate> <asp:LinkButton ID="LinkButton1" runat="server" CausesValidation="False" CssClass="btnlink" CommandName="Delete" Text="刪除" OnClientClick="return confirm('是否刪除？');" ></asp:LinkButton> </ItemTemplate> </asp:TemplateField>