Using.net control to achieve the specific method of making navigation menu

The teacher asked us to use.NET control to make a pull menu. The requirements are as follows:
Mouse over the parent menu brings up three submenus, each with hyperlinks.
Here's the code I did myself:

    <asp:Menu ID="Menu1" runat="server" Orientation="Horizontal" Width="100%" 
            Font-Size="14px" ForeColor="#161621" Font-Bold="True" 
            PathSeparator="1" StaticEnableDefaultPopOutImage="False" 
            > 
                <DynamicMenuStyle BackColor="#D0E6DE" /> 
                <DynamicMenuItemStyle ItemSpacing="5px" /> 
                <Items> 
                        <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Introduce.aspx?id=1"></asp:MenuItem> 
                        <asp:MenuItem Text="IT employed " Value="NavigateUrl="~/Introduce.aspx?id=2"></asp:MenuItem> 
                        <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/PIntroduce.aspx?id=1"></asp:MenuItem> 
                        <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/PIntroduce.aspx?id=2"></asp:MenuItem> 
                    </asp:MenuItem> 
                    <asp:MenuItem Text="IT employed " ValueNavigateUrl="~/News.aspx"></asp:MenuItem> 
                    <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Product.aspx?id=1"> 
                        <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Product.aspx?id=0"></asp:MenuItem> 
                        <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Product.aspx?id=1"></asp:MenuItem> 
                    </asp:MenuItem> 
                    <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Message.aspx"></asp:MenuItem> 
                    <asp:MenuItem Text="IT employed " Value="IT employed " NavigateUrl="~/Download.aspx"></asp:MenuItem> 
                    <asp:MenuItem Text=" Online contact  " Value=" Online contact " NavigateUrl="~/Content.aspx"></asp:MenuItem> 
                </Items> 
            </asp:Menu>