问题

I have a Visual Studio 2010 and when I added a NEW project, VS gives me default css and UI themes. I have 6 aspx pages. Now whenever user is going into some specific page, I want the menu bar of that page to get highlighted so that user will know which page he/she is.

I have a page called: CommSetup.aspx. In the page_load I have written this code:

And in the master page I changed this:

In code behind:

protected void Page_Load(object sender, EventArgs e)
    {
        foreach (MenuItem item in NavigationMenu.Items)
        {
            var navigateUrlParams = item.NavigateUrl.Split('/');
            if (Request.Url.AbsoluteUri.IndexOf(navigateUrlParams[navigateUrlParams.Length - 1]) != -1)
            {
                item.Selected = true;
            }
        }
    }

Markup:

 <body runat ="server" clientidmode ="Static" id = "MasterBody">
    <form runat="server">......
<asp:Menu ID="NavigationMenu" runat="server"  StaticSelectedStyle-CssClass ="Selected"      CssClass="menu" .....

This is what I added in Site.css:

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

回答1:

Here's an example of doing exactly what you're asking for using CSS:

http://hicksdesign.co.uk/journal/highlighting-current-page-with-css

You should be able to achieve that using static ID naming on your controls (instead of letting ASP.NET assign the ID value to each control).

EDIT: To get this to work with a master page, change the <body> tag in your master page to:

<body runat="server" clientidmode="Static" id="MasterBody">

Then in the Page_Load of each page, you can overwrite the id for each page (the master page in my example is of type SiteMaster):

protected void Page_Load(object sender, EventArgs e)
{
    Control c = Page.Master.FindControl("MasterBody");
    if (c != null)
    {
        c.ID = "Page1";
    }
}

Update (2):

I tried running Farzin's example and it didn't seem to work, so here is what I was able to verify worked for me (you won't need the Page_Load from before in your content pages):

Site.master

<asp:Menu ID="NavigationMenu" ...>
    <StaticSelectedStyle CssClass="selected" />
    ...
</asp:Menu>

Site.master.cs

protected void Page_Load(object sender, EventArgs e)
{
    foreach (MenuItem item in NavigationMenu.Items)
    {
        item.Selected = Page.ResolveUrl(item.NavigateUrl).ToLowerInvariant() == Request.Path.ToLowerInvariant();
    }
}

Styles/Site.css

div.menu ul li a.selected
{
    /* put your style definition here */
}

回答2:

You should parse current url in Master page (code behind) and assign different css clss to menu item that belongs to current url.

        foreach (MenuItem item in NavigationMenu.Items)
        {
            var navigateUrlParams = item.NavigateUrl.Split('/');
            if(Request.Url.AbsoluteUri.IndexOf(navigateUrlParams[navigateUrlParams.Length - 1]) != -1)
            {
                item.Selected = true;
            }
        }

just put this code in Form_Load event of your main master page (code behind)

回答3:

You could use the ASP.NET Site Navigation functionality. Scott Mitchell has put out one of the definitive articles on it here.

来源：https://stackoverflow.com/questions/5518118/highlighting-menu-bar-in-asp-net-web-application

标签

ASP.NET

css

menubar

Highlighting Menu Bar in ASP.NET Web Application

问题

回答1:

Update (2):

回答2:

回答3: