asp.net-mvc 获取 ControllerName 和 ActionName 并在 Master Page 中填充 ViewData？
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Get ControllerName and ActionName and populate the ViewData in Master Page?
提问by Abdulsattar Mohammed
I've a SuperControllerwhich will be inherited from all the controllers. In the constructor I'm trying to populate the ViewData usingthe ControllerName and the ActionName.
我有一个SuperController将从所有控制器继承的。在构造函数中，我尝试使用ControllerName 和 ActionName填充 ViewData 。
I'm not going to pass the ControllerName and the ActionName as the ViewData. I've a method that needs the ControllerName and the ActionName and I need to pass the return value of the method as the ViewData.
我不会将 ControllerName 和 ActionName 作为 ViewData 传递。我有一个需要 ControllerName 和 ActionName 的方法，我需要将该方法的返回值作为 ViewData 传递。
How can I do that?
我怎样才能做到这一点？
回答by eu-ge-ne
Don't use ViewData. Use this in your Site.Master instead:
不要使用ViewData. 在您的 Site.Master 中使用它：
<%= ViewContext.RouteData.Values["Controller"] %>
<%= ViewContext.RouteData.Values["Action"] %>
SO - Getting the name of the controller and action method in the view in ASP.Net MVC
回答by José Silva
Try this:
尝试这个：
RouteData.Values.First().Value.ToString()
回答by James S
Assuming that I'm reading your post correctly, and you're not trying to access the controller/action names in the view, but INSTEAD trying to do something with them, and put the result into the viewdata:
假设我正确阅读了您的帖子，并且您没有尝试访问视图中的控制器/操作名称，而是尝试对它们执行某些操作，并将结果放入视图数据中：
You can't do it in the constructor because the context hasn't been created yet. You need to override the Initialize method:
您不能在构造函数中执行此操作，因为尚未创建上下文。您需要覆盖 Initialize 方法：
protected override void Initialize(System.Web.Routing.RequestContext requestContext)
{
base.Initialize(requestContext);
//here the routedata is available
ViewData["controller_name"] = (ControllerContext.RouteData.Values["Controller"];
}
(Note that you could pass in just the ControllerContext.RouteData to your function and let it pick the values it needs.)
（请注意，您可以仅将 ControllerContext.RouteData 传递给您的函数，并让它选择所需的值。）
回答by Wyatt Barnett
I needed to get at these alot from views, and I hit it from a slightly different angle--I wrote a few extension methods to HtmlHelper to give the current ControllerName and ActionName. A bit easier to handle as you don't need to worry about diving into the ViewData[] bag or injecting stuff at appropriate places.
我需要从视图中获取很多信息，并且我从一个稍微不同的角度进行分析——我为 HtmlHelper 编写了一些扩展方法来提供当前的 ControllerName 和 ActionName。更容易处理，因为您无需担心潜入 ViewData[] 包或在适当的位置注入东西。
