我有menu items on master page
,如果用户点击我想要的菜单项,请将其显示为活动状态。我想将Active附加到现有类以使其处于活动状态。
_Layout.cshtml:
<div class="menu-items-navigation">
<div class="Classy-item" class="@Html.IsSelected(actions: "Index", controllers: "Classy")">
<a href="@Url.Action("Index", "Classy")" >
<div style="padding-top: 50px;">Classy Items</div>
</a>
</div>
<div class="Regular-stuff">
<a href="@Url.Action("Index", "RegularStuff")">
<div style="padding-top: 50px;">Regular Stuff</div>
</a>
</div>
<div class="Popular-Vessels">
<a href="@Url.Action("Index", "PopularVessels")">
<div style="padding-top: 50px;">Popular Vessels</div>
</a>
</div>
</div>
现在,如果我希望这个菜单项为Active
,我有一个名为Active的类,如果用户点击这3个菜单项中的任何一个,我想给这个div。
例如,如果我想在其上Regular Stuff as Active when user clicks
,那么它将是这样的:
<div class="Regular-stuff Active">
如果用户点击Classy Item,那么:
<div class="Classy-item Active">
此处的代码Reference:
public static string IsSelected(this HtmlHelper html, string controllers = "", string actions = "", string cssClass = "Active")
{
ViewContext viewContext = html.ViewContext;
bool isChildAction = viewContext.Controller.ControllerContext.IsChildAction;
if (isChildAction)
viewContext = html.ViewContext.ParentActionViewContext;
RouteValueDictionary routeValues = viewContext.RouteData.Values;
string currentAction = routeValues["action"].ToString();
string currentController = routeValues["controller"].ToString();
if (String.IsNullOrEmpty(actions))
actions = currentAction;
if (String.IsNullOrEmpty(controllers))
controllers = currentController;
string[] acceptedActions = actions.Trim().Split(',').Distinct().ToArray();
string[] acceptedControllers = controllers.Trim().Split(',').Distinct().ToArray();
return acceptedActions.Contains(currentAction) && acceptedControllers.Contains(currentController) ?
cssClass : String.Empty;
}
但我在这里很困惑,当点击特定的菜单项时如何对这个Isselected方法进行分类,因为我不能在div上使用类属性2次。
答案 0 :(得分:3)
你是对的,你不能两次声明class
属性,但你可以像这样组合它们:
<div class="Classy-item @Html.IsSelected(actions: "Index", controllers: "Classy")">
如果未选择将呈现:
<div class="Classy-item ">
如果选择则渲染:
<div class="Classy-item Active">