問題描述

這里是 ASP.NET 新手.在頁面上時，我想將相應的菜單項設置為選中狀態.我的方法是這樣的:在 Home.aspx.cs 上:

ASP.NET newbie here. When on a page I'd like to set the corresponding menu item to selected. My approach is this: On Home.aspx.cs:

Menu menu = (Menu)Master.FindControl("Menu1");

if (menu.Items.Count > 0)
{
    menu.FindItem("Home").Selected = true;
}

問題是，menu.item.count == 0.如果重要的話，我的菜單已綁定到站點地圖.

Trouble is, menu.item.count == 0 . My menu is bound to a sitemap, if that matters.

推薦答案

我認為您必須在 MenuItemDataBound 事件上設置所選項目(調整您的代碼):

I think you must set the selected item on MenuItemDataBound event (adapt your code):

protected void Menu1_MenuItemDataBound(object sender, MenuEventArgs e)
{
    if (SiteMap.CurrentNode != null)
    {
        if (e.Item.Text == SiteMap.CurrentNode.Title)
        {
            e.Item.Selected = true;
        }
    }
}

更多內容展示了如何處理以站點地圖作為數據源的菜單中的鏈接...

More content that shows how to handle links in a menu that has as datasource a sitemap...

要在新窗口中打開從 web.sitemap 構建的菜單鏈接...

To have a menu link built from web.sitemap open in new window...

在asp.net頁面添加OnMenuItemDataBound事件:

In asp.net page add OnMenuItemDataBound event:

<asp:Menu ID="mnuFooter" runat="server"
DataSourceID="SiteMapDataSource1"
OnMenuItemDataBound="mnuFooter_MenuItemDataBound">
</asp:Menu>

在 web.sitemap 中，添加一個 ?url 的字符:

In web.sitemap, add a ? character to the url:

在后面的代碼中，捕獲 MenuItemDataBound 事件:

In code behind, capture the MenuItemDataBound event:

protected void mnuFooter_MenuItemDataBound(Object sender, MenuEventArgs e)
{
    if (e.Item.NavigateUrl.Contains("?"))
    {
        e.Item.Target = "_blank";
    }
}

web.sitemap 中任何包含 ?將在新窗口中打開.請注意，使用任何其他有效的 url 字符代替 ?如有必要.

Any url in the web.sitemap that contains a ? will open in a new window. Note, use any other valid url character in place of the ? if necessary.

ASP.NET 菜單控件概述

這篇關于在 ASP.NET 菜單控件中設置 item.selected的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！