ASP.NET MVC - 导航中的当前页面高亮显示

Question

我想知道在使用ASP.NET MVC 3时，如何将CSS类添加到导航中的当前页面？这是我在我的_Layout.cshtml文件导航：

<p>@Html.ActionLink("Product Search", "Index", new { controller = "Home" }, new { @class = "current" }) 
       | @Html.ActionLink("Orders", "Index", new { controller = "Orders" }) 
       | @Html.ActionLink("My Account", "MyAccount", new { controller = "Account" }) 
       | @Html.ActionLink("Logout", "LogOff", new { controller = "Account" })</p> 

正如你可以看到我在与具有CSS类“当前”适用于它的第一个导航4个链路，我想成为能够根据用户所处的页面将此类添加/删除到我的导航中的不同链接。这可能吗？

干杯

Answer 1

我会建议使用此扩展方法。喜欢的东西：

@using MyExtensionNamespace; 

... 

    @Html.NavigationLink("Product Search", "Index", "Home") 
| @Html.NavigationLink("Orders", "Index", "Orders") 
| @Html.NavigationLink("My Account", "MyAccount", "Account") 
| @Html.NavigationLink("Logout", "LogOff", "Account") 

这有让您的剃须刀干净了一点的利益和：

public static HtmlString NavigationLink(
    this HtmlHelper html, 
    string linkText, 
    string actionName, 
    string controllerName) 
{ 
    string contextAction = (string)html.ViewContext.RouteData.Values["action"]; 
    string contextController = (string)html.ViewContext.RouteData.Values["controller"]; 

    bool isCurrent = 
     string.Equals(contextAction, actionName, StringComparison.CurrentCultureIgnoreCase) && 
     string.Equals(contextController, controllerName, StringComparison.CurrentCultureIgnoreCase); 

    return html.ActionLink(
     linkText, 
     actionName, 
     controllerName, 
     routeValues: null, 
     htmlAttributes: isCurrent ? new { @class = "current" } : null); 
} 

然后你就可以通过包括分机号的命名空间，只是调用你的方法用它在你的浏览在其他视图中很容易重用。

Answer 2

你可以在你的HTML类属性来实现

@{ 
    var currentController = ViewContext.RouteData.Values["controller"] as string ?? "Home"; 
    var currentAction = ViewContext.RouteData.Values["action"] as string ?? "Index"; 
    var currentPage = (currentController + "-" + currentAction).ToLower(); 
} 

@Html.ActionLink("Product Search", "Index", "Home", null, 
       new { @class = currentPage == "home-index" ? "current" : "" }) 
@Html.ActionLink("MyAccount", "MyAccount", "Account", null, 
        new { @class = currentPage == "account-myaccount" ? "current" : "" }) 

Answer 3

@{ 
    var controller = ViewContext.RouteData.Values["controller"].ToString(); 
    var action = ViewContext.RouteData.Values["action"].ToString(); 
    var isActiveController = new Func<string, string, string, string, string>((ctrl, act, activeStyle, inactiveStyle) => controller == ctrl && action == act ? activeStyle : inactiveStyle); 
} 

然后，你可以这样做：

class="@isActiveController("controlername","action","activecssstyleclass","inactiveccsstyle")" 

刚的其他方式@dknaack他回答..更通用和更少的功能重复您的代码。

Answer 4

我用这个教程来完成这件事，这是一个简单得多的理解和需要2分钟 Hightlight Active menu item

Answer 5

在我的情况下，假设我有一个主页和一个菜单。您li类作为条件

@{ 
    ViewBag.Title = "Home"; 
    ViewBag.Active = "Home"; 
} 

然后将其放置到主动与否：

主页中添加ViewBag.Active作为占位符这样

<li class="@(ViewBag.Active=="Home"? "active" : "")"> 
     <a href="@Url.Action("Index", "Home")"><span>@ViewBag.Title</span></a> 
</li>