因此我遇到了MVC ActionLink和bootstrap下拉列表的问题。我成功了简单的菜单扩展,我传递了像字符串和一个bool这样的参数。但是现在我正在尝试创建自己的扩展,它可以生成Bootstrap Dropdown并将选定的css类添加到下拉列表的父级 - “ONEofTHEdropdownITEMSselected” - 当选择下拉列表中的某个项目时(选择下拉列表时)它路由到不同控制器的项目可以是少数或多个控制器):
<a href="#" class="dropdown-toggle ONEofTHEdropdownITEMSselected" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
和
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="~/area/controller1">Action1</a></li>
<li><a href="~/area/controller2">Action2</a></li>
</ul>
</li>
下面是我的UI / MenuExtensions.cs我想要实现的 - 传递两个可以生成引导下拉列表的参数,我可以在该下拉列表中手动插入新的菜单项。
public static class MenuExtensions
{
public static MvcHtmlString MenuItem(
this HtmlHelper htmlHelper,
string text,
string action,
string controller,
string cssClass = "item",
bool isController = false
)
{
var li = new TagBuilder("li");
var routeData = htmlHelper.ViewContext.RouteData;
var currentAction = routeData.GetRequiredString("action");
var currentController = routeData.GetRequiredString("controller");
if ((string.Equals(currentAction, action, StringComparison.OrdinalIgnoreCase) || isController) &&
string.Equals(currentController, controller, StringComparison.OrdinalIgnoreCase))
li.AddCssClass("am-selected");
li.InnerHtml = htmlHelper.ActionLink(text, action, controller, new { Area = "" }, new { @class = cssClass }).ToHtmlString();
return MvcHtmlString.Create(li.ToString());
}
public static MvcHtmlString SelectMenu(
this HtmlHelper htmlHelper,
string cssClass,
SelectMenuItem[] menuItems
)
{
TagBuilder list = new TagBuilder("li")
{
InnerHtml = ""
};
string currentAction = htmlHelper.ViewContext.RouteData.GetRequiredString("action");
string currentController = htmlHelper.ViewContext.RouteData.GetRequiredString("controller");
foreach (SelectMenuItem menuItem in menuItems)
{
TagBuilder li = new TagBuilder("li")
{
InnerHtml = htmlHelper.ActionLink(menuItem.Text, menuItem.Action, menuItem.Controller, null, new { }).ToHtmlString()
};
ul.InnerHtml += li.ToString();
}
return MvcHtmlString.Create(list.ToString());
}
}
这是外部课程
public class SelectMenuItem
{
public string Text { get; set; }
public string Action { get; set; }
public string Controller { get; set; }
public bool IsVisible { get; set; }
public SelectMenuItem()
{
IsVisible = true;
}
}
之后我的html看起来像这样。
@Html.SelectMenu("dropdown", new []{
new SelectMenuItem{ Text = "ViewOne", Controller = "Controller1", Action = "index", IsVisible = SystemUser.Current().IsAdmin},
new SelectMenuItem{ Text = "ViewTwo", Controller = "Controller2", Action = "index"}
});
问题是SelectMenu仅渲染:
<li></li>
答案 0 :(得分:4)
无需重新发明轮子。使用TwitterBootstrapMVC,可以使用以下语法实现所需的输出:
@using (var dd = Html.Bootstrap().Begin(new DropDown("Dropdown").SetLinksActiveByControllerAndAction()))
{
@dd.ActionLink("Action1", "index", "controller1")
@dd.ActionLink("Action2", "index", "controller2")
}
请注意扩展方法SetLinksActiveByControllerAndAction()
。这就是基于当前控制器/操作使链接处于活动状态的原因。
免责声明:我是TwitterBootstrapMVC的作者。
如果使用Bootstrap 3,您需要购买许可证。对于Bootstrap 2,它是免费的。