ASP.net如何隐藏访客的菜单项？

Question

我想隐藏访客的"管理面板"菜单项,而不进入角色方法.

<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
    <siteMapNode url="" title="Nav"  description="">
        <siteMapNode url="~/Default.aspx" title="Home"  description=""></siteMapNode>
        <siteMapNode url="~/About.aspx" title="About"  description=""></siteMapNode>
        <siteMapNode url="" title="Admin Panel"  description="">
          <siteMapNode url="~/Admin/AddPosts.aspx" title="Add Posts"  description=""></siteMapNode>
          <siteMapNode url="~/Admin/EditPosts.aspx" title="Edit Posts"  description=""></siteMapNode>
          <siteMapNode url="~/Admin/ApproveComments.aspx" title="Approve Comments"  description=""></siteMapNode>
        </siteMapNode>
    </siteMapNode>
</siteMap>

母版页

protected void Menu1_MenuItemDataBound(object sender, MenuEventArgs e)
{
    if (!HttpContext.Current.User.Identity.IsAuthenticated)
    {
        System.Web.UI.WebControls.Menu menu = (System.Web.UI.WebControls.Menu)sender;
        SiteMapNode mapNode = (SiteMapNode)e.Item.DataItem;

        System.Web.UI.WebControls.MenuItem itemToRemove = menu.FindItem(mapNode.Title);

        if (mapNode.Title == "Admin Panel")
        {
            System.Web.UI.WebControls.MenuItem parent = e.Item.Parent;
            if (parent != null)
            {
                parent.ChildItems.Remove(e.Item);
            }
        }
    }
}

标记

    <asp:Menu ID="Menu1" runat="server" DataSourceID="SiteMapDataSource1" 
        Orientation="Horizontal" onmenuitemdatabound="Menu1_MenuItemDataBound">
    </asp:Menu>
    <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" 
        ShowStartingNode="False" />

我厌倦了上面的代码,但它无法正常工作.看起来,"管理面板"的父级为空.但我不知道如何修改它以使其工作.

我也试过一个简单的版本:

Menu1.Items.RemoveAt(2);

不知道为什么它给了我索引超出范围的错误.管理面板项目实际上是Menu1中的第3项.

任何帮助,将不胜感激.

Answer 1

可以这两种方式:

标记:

<asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" 
                EnableViewState="False" IncludeStyleBlock="False" Orientation="Horizontal" 
                DataSourceID="SiteMapDataSource1" 
                onmenuitemdatabound="NavigationMenu_MenuItemDataBound">
</asp:Menu>
<asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="false" />

码:

protected void NavigationMenu_MenuItemDataBound(object sender, MenuEventArgs e)
{
    System.Web.UI.WebControls.Menu menu = (System.Web.UI.WebControls.Menu)sender;
    SiteMapNode mapNode = (SiteMapNode)e.Item.DataItem;

    if (mapNode.Title == "Admin Panel")
    {            
        System.Web.UI.WebControls.MenuItem itemToRemove = menu.FindItem(mapNode.Title);
        menu.Items.Remove(itemToRemove);
    }
}

标记:

<asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" 
                EnableViewState="False" IncludeStyleBlock="False" Orientation="Horizontal" 
                DataSourceID="SiteMapDataSource1" ondatabound="NavigationMenu_DataBound" >
</asp:Menu>
<asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="false" />

码:

protected void NavigationMenu_DataBound(object sender, EventArgs e)
{
    ((System.Web.UI.WebControls.Menu)sender).Items.RemoveAt(2);
}