突出显示 ASP.Net 菜单中的选定选项卡

Question

我正在尝试用不同颜色突出显示 ASP.NET 菜单中选定的选项卡。这样做似乎很简单，但首先我无法让它工作，其次我找不到一个好的工作示例。

ASP/HTML

<div class="clear hideSkiplink">
                <asp:Menu ID="NavigationMenu" runat="server" CssClass="menu" EnableViewState="False"
                    IncludeStyleBlock="false" Orientation="Horizontal">

                    <Items>
                        <asp:MenuItem NavigateUrl="~/ReadMe.aspx" Text="Read Me" />
                        <asp:MenuItem NavigateUrl="~/Summary.aspx" Text="Summary" />
                        <asp:MenuItem NavigateUrl="~/Detail.aspx" Text="Detail" />
                    </Items>
                </asp:Menu>
  </div>

CSS

div.hideSkiplink
{
    background-color:#3a4f63;
    width:100%;
}

div.menu
{
    padding: 4px 0px 4px 8px;
}

div.menu ul
{
    list-style: none;
    margin: 0px;
    padding: 0px;
    width: auto;

}

div.menu ul li a, div.menu ul li a:visited
{
    background-color: #465c71;
    border: 1px #4e667d solid;
    color: #dde4ec;
    display: block;
    line-height: 1.35em;
    padding: 4px 20px;
    text-decoration: none;
    white-space: nowrap;
}

div.menu ul li a:hover
{
    background-color: #bfcbd6;
    color: #465c71;
    text-decoration: none;
}

div.menu ul li a:active
{
    background-color: #465c71;

    color: #cfdbe6;
    text-decoration: none;
}

Answer 1

这是一个可行的解决方案： *脚本*

<script language="javascript" type="text/javascript">

   $(function () {
        // this will get the full URL at the address bar
        var url = window.location.href;

        // passes on every "a" tag 
        $("#cssmenu a").each(function () {
            // checks if its the same on the address bar
            if (url == (this.href)) {
                $(this).closest("li").addClass("active");
            }
        });
        $("#header a").each(function () {
            // checks if its the same on the address bar
            if (url == (this.href)) {
                $(this).closest("li").addClass("active");
            }
        });

    });
</script>

标记

使用 div 列出项目 id ="cssmenu"

<div id='cssmenu'>
    <ul>
       <li><a href="../Admin/dashboard.aspx"><span>Dashboard</span></a></li>
       <li><a href="../Admin/Report.aspx"><span>Reports</span></a></li>
       <li><a href="../Admin/Shop.aspx"><span>Shop</span></a></li>
       <li><a href="../Admin/system.aspx"><span>System</span></a></li>
    </ul>
</div>

样式表

#cssmenu ul {
    list-style-type: none;
    width: auto;
    position: relative;
    display: block;
    height: 33px;
    font-size: .6em;
    background: url(images/bg.png) repeat-x top left;
    font-family: Verdana,Helvetica,Arial,sans-serif;
    border: 1px solid #000;
    margin: 0;
    padding: 0;
}

#cssmenu li {
    display: block;
    float: left;
    margin: 0;
    padding: 0;
}

#cssmenu li a {
    float: left;
    color: #A79787;
    text-decoration: none;
    height: 24px;
    padding: 9px 15px 0;
    font-weight: normal;
}

#cssmenu li a:hover,
#cssmenu .active {
    color: #fff;
    background: url(images/bg.png) repeat-x top left;
    text-decoration: none;
}

#cssmenu .active a {
    color: #fff;
    font-weight: 700;
}

#cssmenu ul { background-color: #629600 }
#cssmenu li a:hover,
#cssmenu li.active { background-color: #7AB900 }

Answer 2

This answer 到 ASP.NET: Highlight menu item of current page 应该提供您所追求的解决方案。

基本上，您需要使用Menu.StaticSelectedStyle Property。上面的答案链接和文档中有一个示例。

示例片段

<asp:menu [...]>
        <staticselectedstyle backcolor="LightBlue"
          borderstyle="Solid"
          bordercolor="Black"
          borderwidth="1"/>

        [...]
</asp:menu>

此外，您需要删除 menu attribute IncludeStyleBlock="false"，因为它“指示 ASP.NET 是否应为菜单中使用的样式呈现一个级联样式表 (CSS) 定义块。”

其他有用的链接：

• asp:MenuItem / CSS
• StaticMenuItemStyle vs. StaticSelectedStyle - Does one overwrite the other?

Answer 3

您需要手动设置 Selected MenuItem

NavigationMenu.Items(i).Selected = True

我创建了一个函数来更轻松地突出显示。

SelectMenuByValue("Value2", NavigationMenu)

它将 MenuItem 的 Value 和 Menu 控件实例作为参数。

<asp:Menu ID="NavigationMenu" runat="server">
<Items>
    <asp:MenuItem Text="Parent1" Value="ParentValue">
        <asp:MenuItem Text="SubMenu1" Value="Value1" NavigateUrl="~/Page1.aspx" />
        <asp:MenuItem Text="SubMenu2" Value="Value2" NavigateUrl="~/Page2.aspx" />
        <asp:MenuItem Text="SubMenu3" Value="Value3" NavigateUrl="~/Page3.aspx" />
    </asp:MenuItem>
</Items>

背后的代码：

Public Sub SelectMenuByValue(ByVal sValue As String, ByVal NavigationMenu As Menu)
Dim iMenuCount As Integer = NavigationMenu.Items.Count - 1
For i As Integer = 0 To iMenuCount
    Dim menuItem As MenuItem = NavigationMenu.Items(i)
    If menuItem.Value = sValue Then
        If menuItem.Enabled AndAlso menuItem.Selectable Then menuItem.Selected = True
        Exit For
    End If
    If CheckSelectSubMenu(menuItem, sValue) Then Exit For
Next
End Sub

Private Function CheckSelectSubMenu(ByVal menuItem As MenuItem, ByVal sValue As String) As Boolean
    CheckSelectSubMenu = False
    Dim iMenuCount As Integer = menuItem.ChildItems.Count - 1
    For i As Integer = 0 To iMenuCount
        Dim subMenuItem As MenuItem = menuItem.ChildItems(i)
        If subMenuItem.Value = sValue Then
            CheckSelectSubMenu = True
            If subMenuItem.Enabled AndAlso subMenuItem.Selectable Then subMenuItem.Selected = True
            Exit For
        End If
        If CheckSelectSubMenu(subMenuItem, sValue) Then
            CheckSelectSubMenu = True
            Exit For
        End If
    Next
End Function

参考：来自论坛ASP.NET 4 : Highlight menu item for current page