blocks|key|1735138|text|您可以使用<%25=+Url.Action(操作、控制器、值)+%25>从母版页中构建%25>。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1735139|你这样做可能是为了突出显示当前页面的选项卡或其他什么吗？|1735140|如果是这样的话，您可以从视图中使用ViewContext并获取所需的值。|1735141|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

You can use &lt;%= Url.Action(action, controller, values) %> to build the URL from within the master page.

Are you doing this to maybe highlight a tab for the current page or something?

If so you can use ViewContext from the view and get the values you need.

blocks|key|1735180|text|我编写了允许我访问路由参数的a+helper+class。有了这个帮助器，您可以获得控制器、操作以及传递给操作的所有参数。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1735181|entityMap|0|LINK|mutability|MUTABLE|url|http://biasecurities.com/blog/2009/helper-to-access-route-parameters/^0|E|E|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I wrote <a href="http://biasecurities.com/blog/2009/helper-to-access-route-parameters/" rel="nofollow noreferrer">a helper class</a> that allows me to access the route parameters. With this helper, you can get the controller, action, and all parameters passed to the action.

blocks|key|1520163|text|这对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1520164|<%25=+this.Url.RouteUrl(this.ViewContext.RouteData.Values)+%25>|offset|length|style|CODE|1520165|它返回当前的Url；/Home/About|1520166|也许有一种更简单的方法来返回实际的路由字符串？|1520167|entityMap^0|0|0|1N|0|A|B|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|R|8|@$D|S|E|T|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|U|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|M|$]]

This worked for me:

<code>&lt;%= this.Url.RouteUrl(this.ViewContext.RouteData.Values) %&gt;</code>

It returns the current Url as such; <code>/Home/About</code>

Maybe there is a simpler way to return the actual route string?

blocks|key|1735302|text|您可以从ViewContext.RouteData获取这些数据。下面是有关如何访问(和使用)该信息的一些示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1735303|/将这些添加到我的viewmasterpage、viewpage和viewusercontrol基类中：|1735304|public+bool+IsController(string+controller)
{
++++if+(ViewContext.RouteData.Values["controller"]+!=+null)
++++{
++++++++return+ViewContext.RouteData.Values["controller"].ToString().Equals(controller,+StringComparison.OrdinalIgnoreCase);
++++}
++++return+false;
}
public+bool+IsAction(string+action)
{
++++if+(ViewContext.RouteData.Values["action"]+!=+null)
++++{
++++++++return+ViewContext.RouteData.Values["action"].ToString().Equals(action,+StringComparison.OrdinalIgnoreCase);
++++}
++++return+false;
}
public+bool+IsAction(string+action,+string+controller)
{
++++return+IsController(controller)+&&+IsAction(action);
}|code-block|syntax|javascript|1735305|/我添加到UrlHelper类中的一些扩展方法。|1735306|public+static+class+UrlHelperExtensions
{
++++///+<summary>
++++///+Determines+if+the+current+view+equals+the+specified+action
++++///+</summary>
++++///+<typeparam+name="TController">The+type+of+the+controller.</typeparam>
++++///+<param+name="helper">Url+Helper</param>
++++///+<param+name="action">The+action+to+check.</param>
++++///+<returns>
++++///+++++<c>true</c>+if+the+specified+action+is+the+current+view;+otherwise,+<c>false</c>.
++++///+</returns>
++++public+static+bool+IsAction<TController>(this+UrlHelper+helper,+LambdaExpression+action)+where+TController+:+Controller
++++{
++++++++MethodCallExpression+call+=+action.Body+as+MethodCallExpression;
++++++++if+(call+==+null)
++++++++{
++++++++++++throw+new+ArgumentException("Expression+must+be+a+method+call",+"action");
++++++++}

++++++++return+(call.Method.Name.Equals(helper.ViewContext.ViewName,+StringComparison.OrdinalIgnoreCase)+&&
++++++++++++++++typeof(TController)+==+helper.ViewContext.Controller.GetType());
++++}

++++///+<summary>
++++///+Determines+if+the+current+view+equals+the+specified+action
++++///+</summary>
++++///+<param+name="helper">Url+Helper</param>
++++///+<param+name="actionName">Name+of+the+action.</param>
++++///+<returns>
++++///+++++<c>true</c>+if+the+specified+action+is+the+current+view;+otherwise,+<c>false</c>.
++++///+</returns>
++++public+static+bool+IsAction(this+UrlHelper+helper,+string+actionName)
++++{
++++++++if+(String.IsNullOrEmpty(actionName))
++++++++{
++++++++++++throw+new+ArgumentException("Please+specify+the+name+of+the+action",+"actionName");
++++++++}
++++++++string+controllerName+=+helper.ViewContext.RouteData.GetRequiredString("controller");
++++++++return+IsAction(helper,+actionName,+controllerName);
++++}

++++///+<summary>
++++///+Determines+if+the+current+view+equals+the+specified+action
++++///+</summary>
++++///+<param+name="helper">Url+Helper</param>
++++///+<param+name="actionName">Name+of+the+action.</param>
++++///+<param+name="controllerName">Name+of+the+controller.</param>
++++///+<returns>
++++///+++++<c>true</c>+if+the+specified+action+is+the+current+view;+otherwise,+<c>false</c>.
++++///+</returns>
++++public+static+bool+IsAction(this+UrlHelper+helper,+string+actionName,+string+controllerName)
++++{
++++++++if+(String.IsNullOrEmpty(actionName))
++++++++{
++++++++++++throw+new+ArgumentException("Please+specify+the+name+of+the+action",+"actionName");
++++++++}
++++++++if+(String.IsNullOrEmpty(controllerName))
++++++++{
++++++++++++throw+new+ArgumentException("Please+specify+the+name+of+the+controller",+"controllerName");
++++++++}

++++++++if+(!controllerName.EndsWith("Controller",+StringComparison.OrdinalIgnoreCase))
++++++++{
++++++++++++controllerName+=+controllerName+%2B+"Controller";
++++++++}

++++++++bool+isOnView+=+helper.ViewContext.ViewName.SafeEquals(actionName,+StringComparison.OrdinalIgnoreCase);
++++++++return+isOnView+&&+helper.ViewContext.Controller.GetType().Name.Equals(controllerName,+StringComparison.OrdinalIgnoreCase);
++++}

++++///+<summary>
++++///+Determines+if+the+current+request+is+on+the+specified+controller
++++///+</summary>
++++///+<param+name="helper">The+helper.</param>
++++///+<param+name="controllerName">Name+of+the+controller.</param>
++++///+<returns>
++++///+++++<c>true</c>+if+the+current+view+is+on+the+specified+controller;+otherwise,+<c>false</c>.
++++///+</returns>
++++public+static+bool+IsController(this+UrlHelper+helper,+string+controllerName)
++++{
++++++++if+(String.IsNullOrEmpty(controllerName))
++++++++{
++++++++++++throw+new+ArgumentException("Please+specify+the+name+of+the+controller",+"controllerName");
++++++++}

++++++++if+(!controllerName.EndsWith("Controller",+StringComparison.OrdinalIgnoreCase))
++++++++{
++++++++++++controllerName+=+controllerName+%2B+"Controller";
++++++++}

++++++++return+helper.ViewContext.Controller.GetType().Name.Equals(controllerName,+StringComparison.OrdinalIgnoreCase);
++++}

++++///+<summary>
++++///+Determines+if+the+current+request+is+on+the+specified+controller
++++///+</summary>
++++///+<typeparam+name="TController">The+type+of+the+controller.</typeparam>
++++///+<param+name="helper">The+helper.</param>
++++///+<returns>
++++///+++++<c>true</c>+if+the+current+view+is+on+the+specified+controller;+otherwise,+<c>false</c>.
++++///+</returns>
++++public+static+bool+IsController<TController>(this+UrlHelper+helper)+where+TController+:+Controller
++++{
++++++++return+(typeof(TController)+==+helper.ViewContext.Controller.GetType());
++++}
}|1735307|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You can get that data from ViewContext.RouteData. Below are some examples for how to access (and use) that information:

/// These are added to my viewmasterpage, viewpage, and viewusercontrol base classes:

<pre><code>public bool IsController(string controller)
{
 if (ViewContext.RouteData.Values["controller"] != null)
 {
 return ViewContext.RouteData.Values["controller"].ToString().Equals(controller, StringComparison.OrdinalIgnoreCase);
 }
 return false;
}
public bool IsAction(string action)
{
 if (ViewContext.RouteData.Values["action"] != null)
 {
 return ViewContext.RouteData.Values["action"].ToString().Equals(action, StringComparison.OrdinalIgnoreCase);
 }
 return false;
}
public bool IsAction(string action, string controller)
{
 return IsController(controller) &amp;&amp; IsAction(action);
}
</code></pre>

/// Some extension methods that I added to the UrlHelper class.

<pre><code>public static class UrlHelperExtensions
{
 /// &lt;summary&gt;
 /// Determines if the current view equals the specified action
 /// &lt;/summary&gt;
 /// &lt;typeparam name="TController"&gt;The type of the controller.&lt;/typeparam&gt;
 /// &lt;param name="helper"&gt;Url Helper&lt;/param&gt;
 /// &lt;param name="action"&gt;The action to check.&lt;/param&gt;
 /// &lt;returns&gt;
 /// &lt;c&gt;true&lt;/c&gt; if the specified action is the current view; otherwise, &lt;c&gt;false&lt;/c&gt;.
 /// &lt;/returns&gt;
 public static bool IsAction&lt;TController&gt;(this UrlHelper helper, LambdaExpression action) where TController : Controller
 {
 MethodCallExpression call = action.Body as MethodCallExpression;
 if (call == null)
 {
 throw new ArgumentException("Expression must be a method call", "action");
 }

 return (call.Method.Name.Equals(helper.ViewContext.ViewName, StringComparison.OrdinalIgnoreCase) &amp;&amp;
 typeof(TController) == helper.ViewContext.Controller.GetType());
 }

 /// &lt;summary&gt;
 /// Determines if the current view equals the specified action
 /// &lt;/summary&gt;
 /// &lt;param name="helper"&gt;Url Helper&lt;/param&gt;
 /// &lt;param name="actionName"&gt;Name of the action.&lt;/param&gt;
 /// &lt;returns&gt;
 /// &lt;c&gt;true&lt;/c&gt; if the specified action is the current view; otherwise, &lt;c&gt;false&lt;/c&gt;.
 /// &lt;/returns&gt;
 public static bool IsAction(this UrlHelper helper, string actionName)
 {
 if (String.IsNullOrEmpty(actionName))
 {
 throw new ArgumentException("Please specify the name of the action", "actionName");
 }
 string controllerName = helper.ViewContext.RouteData.GetRequiredString("controller");
 return IsAction(helper, actionName, controllerName);
 }

 /// &lt;summary&gt;
 /// Determines if the current view equals the specified action
 /// &lt;/summary&gt;
 /// &lt;param name="helper"&gt;Url Helper&lt;/param&gt;
 /// &lt;param name="actionName"&gt;Name of the action.&lt;/param&gt;
 /// &lt;param name="controllerName"&gt;Name of the controller.&lt;/param&gt;
 /// &lt;returns&gt;
 /// &lt;c&gt;true&lt;/c&gt; if the specified action is the current view; otherwise, &lt;c&gt;false&lt;/c&gt;.
 /// &lt;/returns&gt;
 public static bool IsAction(this UrlHelper helper, string actionName, string controllerName)
 {
 if (String.IsNullOrEmpty(actionName))
 {
 throw new ArgumentException("Please specify the name of the action", "actionName");
 }
 if (String.IsNullOrEmpty(controllerName))
 {
 throw new ArgumentException("Please specify the name of the controller", "controllerName");
 }

 if (!controllerName.EndsWith("Controller", StringComparison.OrdinalIgnoreCase))
 {
 controllerName = controllerName + "Controller";
 }

 bool isOnView = helper.ViewContext.ViewName.SafeEquals(actionName, StringComparison.OrdinalIgnoreCase);
 return isOnView &amp;&amp; helper.ViewContext.Controller.GetType().Name.Equals(controllerName, StringComparison.OrdinalIgnoreCase);
 }

 /// &lt;summary&gt;
 /// Determines if the current request is on the specified controller
 /// &lt;/summary&gt;
 /// &lt;param name="helper"&gt;The helper.&lt;/param&gt;
 /// &lt;param name="controllerName"&gt;Name of the controller.&lt;/param&gt;
 /// &lt;returns&gt;
 /// &lt;c&gt;true&lt;/c&gt; if the current view is on the specified controller; otherwise, &lt;c&gt;false&lt;/c&gt;.
 /// &lt;/returns&gt;
 public static bool IsController(this UrlHelper helper, string controllerName)
 {
 if (String.IsNullOrEmpty(controllerName))
 {
 throw new ArgumentException("Please specify the name of the controller", "controllerName");
 }

 if (!controllerName.EndsWith("Controller", StringComparison.OrdinalIgnoreCase))
 {
 controllerName = controllerName + "Controller";
 }

 return helper.ViewContext.Controller.GetType().Name.Equals(controllerName, StringComparison.OrdinalIgnoreCase);
 }

 /// &lt;summary&gt;
 /// Determines if the current request is on the specified controller
 /// &lt;/summary&gt;
 /// &lt;typeparam name="TController"&gt;The type of the controller.&lt;/typeparam&gt;
 /// &lt;param name="helper"&gt;The helper.&lt;/param&gt;
 /// &lt;returns&gt;
 /// &lt;c&gt;true&lt;/c&gt; if the current view is on the specified controller; otherwise, &lt;c&gt;false&lt;/c&gt;.
 /// &lt;/returns&gt;
 public static bool IsController&lt;TController&gt;(this UrlHelper helper) where TController : Controller
 {
 return (typeof(TController) == helper.ViewContext.Controller.GetType());
 }
}
</code></pre>

blocks|key|1520304|text|我总是尝试实现满足项目需求的最简单的解决方案。正如Enstein所说，“让事情尽可能简单，但不是更简单。”尝尝这个。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1520305|<%25:+Request.Path+%25>|code-block|syntax|javascript|1520306|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I always try to implement the simplest solution that meets the project requirements. As Enstein said, "Make things as simple as possible, but not simpler." Try this. 

<pre><code>&lt;%: Request.Path %&gt;
</code></pre>

Is it possible to get the route/virtual url associated with a controller action or on a view? I saw that Preview 4 added LinkBuilder.BuildUrlFromExpression helper, but it's not very useful if you want to use it on the master, since the controller type can be different. Any thoughts are appreciated.

Asp.Net MVC: How do I get virtual url for the current controller/view?

是否有可能获得与控制器操作或视图相关联的路由/虚拟url？我看到预览版4添加了LinkBuilder.BuildUrlFromExpression助手，但如果你想在主服务器上使用它，它并不是很有用，因为控制器的类型可以不同。任何想法都是值得感谢的。

问Asp.Net MVC:如何获取当前控制器/视图的虚拟url？
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