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copied!<p>you could create a HtmlHelper to return the value, that way you can use it anywhere</p> <p>Create a “HtmlHelpers” folder in your project Create a static class Define a static method with the first parameter “this HtmlHelper helper“</p> <pre><code>using System; using System.Collections.Generic; using System.Web; using System.Web.Mvc; namespace ThisMVCApp.WebUI.HtmlHelpers { public static class HtmlHelperExtensions { public static string IfActive(this HtmlHelper helper, string controller, string action) { string classValue = ""; string currentController = helper.ViewContext.Controller.ValueProvider.GetValue("controller").RawValue.ToString(); string currentAction = helper.ViewContext.Controller.ValueProvider.GetValue("action").RawValue.ToString(); if (currentController == controller && currentAction == action) { classValue = "youarehere"; } return classValue; } } } </code></pre> <p>Add this to your web.config file (the one in your Views folder!!)</p> <pre><code><system.web.webPages.razor> <host ... /> <pages pageBaseType="System.Web.Mvc.WebViewPage"> <namespaces> ... <add namespace="ThisMVCApp.WebUI.HtmlHelpers" /> </namespaces> </pages> </system.web.webPages.razor> </code></pre> <p>now you can just apply the above method as any class or attribute on buttons or any element like so :</p> <pre><code><nav> <ul id="menu"> <li class="@Html.IfActive("Home", "Index")">@Html.ActionLink("Home", "Index", "Home")</li> <li class="@Html.IfActive("Home", "About")">@Html.ActionLink("About", "About", "Home")</li> </ul> </nav> </code></pre>

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