menu的第二级为什么显示不出来呢?
先谢谢大家了
线上等

<asp:Menu ID="Menu3" runat="server" BackColor="#F7F6F3" DynamicHorizontalOffset="3"
                        Font-Names="Verdana" Font-Size="0.8em" ForeColor="#7C6F57" StaticSubMenuIndent="10px">
                        <StaticSelectedStyle BackColor="#5D7B9D" />
                        <StaticMenuItemStyle HorizontalPadding="5px" VerticalPadding="2px" />
                        <DynamicHoverStyle BackColor="#7C6F57" ForeColor="White" />
                        <DynamicMenuStyle BackColor="#F7F6F3" />
                        <DynamicSelectedStyle BackColor="#5D7B9D" />
                        <DynamicMenuItemStyle HorizontalPadding="5px" VerticalPadding="2px" />
                        <StaticHoverStyle BackColor="#7C6F57" ForeColor="White" />
                        <Items>
                            <asp:MenuItem Text="R4E2" Value="R4E2">
                                <asp:MenuItem Text="iLO" Value="iLO">
                                    <asp:MenuItem NavigateUrl="http://172.16.254.70" Target="_blank" Text="OA1 172.16.254.70"
            
                                </asp:MenuItem>

是什么原因呢？
第2级一直都不出现啊
气死我了