mburumaxwell/MyExtensions.cs

## _Layout (original).cshtml
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title>@ViewBag.Title - My ASP.NET MVC Application</title>
        <link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
        <meta name="viewport" content="width=device-width" />
        @Styles.Render("~/Content/css")
        @Scripts.Render("~/bundles/modernizr")
    </head>
    <body>
        <header>
            <div class="content-wrapper">
                <div class="float-left">
                    <p class="site-title">@Html.ActionLink("your logo here", "Index", "Home")</p>
                </div>
                <div class="float-right">
                    <section id="login">
                        @Html.Partial("_LoginPartial")
                    </section>
                    <nav>
                        <ul id="menu">
                            <li>@Html.ActionLink("Home", "Index", "Home")</li>
                            <li>@Html.ActionLink("About", "About", "Home")</li>
                            <li>@Html.ActionLink("Contact", "Contact", "Home")</li>
                        </ul>
                    </nav>
                </div>
            </div>
        </header>
        <div id="body">
            @RenderSection("featured", required: false)
            <section class="content-wrapper main-content clear-fix">
                @RenderBody()
            </section>
        </div>
        <footer>
            <div class="content-wrapper">
                <div class="float-left">
                    <p>&copy; @DateTime.Now.Year - My ASP.NET MVC Application</p>
                </div>
            </div>
        </footer>

        @Scripts.Render("~/bundles/jquery")
        @RenderSection("scripts", required: false)
    </body>
</html>

## _Layout.cshtml
<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <title>@ViewBag.Title - My ASP.NET MVC Application</title>
        <link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
        <meta name="viewport" content="width=device-width" />
        @Styles.Render("~/Content/css")
        @Scripts.Render("~/bundles/modernizr")
    </head>
    <body>
        <header>
            <div class="content-wrapper">
                <div class="float-left">
                    <p class="site-title">@Html.ActionLink("your logo here", "Index", "Home")</p>
                </div>
                <div class="float-right">
                    <section id="login">
                        @Html.Partial("_LoginPartial")
                    </section>
                    <nav>
                        <ul id="menu">
                            @Html.ActionMenuItem("Home", "Index", "Home", new { area = "" }, null)
                            @Html.ActionMenuItem("About", "About", "Home", new { area = "" }, null)
                            @Html.ActionMenuItem("Contact", "Contact", "Home", new { area = "" }, null)
                            @Html.ActionMenuItem("Admin", "Index", "AdminHome", new { area = "admin" }, null)
                        </ul>
                    </nav>
                </div>
            </div>
        </header>
        <div id="body">
            @RenderSection("featured", required: false)
            <section class="content-wrapper main-content clear-fix">
                @RenderBody()
            </section>
        </div>
        <footer>
            <div class="content-wrapper">
                <div class="float-left">
                    <p>&copy; @DateTime.Now.Year - My ASP.NET MVC Application</p>
                </div>
            </div>
        </footer>

        @Scripts.Render("~/bundles/jquery")
        @RenderSection("scripts", required: false)
    </body>
</html>

## MyExtensions.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Mvc;
using System.Web.Mvc.Html;
using System.Web.Routing;

namespace MvcApplication1 {
    public static class HtmlExtensions {
        public static MvcHtmlString ActionMenuItem(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, object routeValues, object htmlAttributes) {
            var tag = new TagBuilder("li");

            var routeData = htmlHelper.ViewContext.RouteData;
            var controller = routeData.GetRequiredString("controller");
            var action = routeData.GetRequiredString("action");
            var area = routeData.DataTokens["area"] as string;

            var routesGiven = routeValues == null ? null : new RouteValueDictionary(routeValues);
            object an = null;
            if (routesGiven != null) routesGiven.TryGetValue("area", out an);
            var areaName = an as string;

            bool active = ((string.IsNullOrEmpty(area) && string.IsNullOrEmpty(areaName)) || (area.Equals(areaName, StringComparison.OrdinalIgnoreCase)));
            active &= ((string.IsNullOrEmpty(controller) && string.IsNullOrEmpty(controllerName)) || (controller.Equals(controllerName, StringComparison.OrdinalIgnoreCase)));
            active &= ((string.IsNullOrEmpty(action) && string.IsNullOrEmpty(actionName)) || (action.Equals(actionName, StringComparison.OrdinalIgnoreCase)));

            if (active) tag.AddCssClass("active");

            tag.InnerHtml = htmlHelper.ActionLink(linkText, actionName, controllerName, routeValues, htmlAttributes).ToString();
            return MvcHtmlString.Create(tag.ToString());
        }
    }
}
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="utf-8" />
	<title>@ViewBag.Title - My ASP.NET MVC Application</title>
	<link href="~/favicon.ico" rel="shortcut icon" type="image/x-icon" />
	<meta name="viewport" content="width=device-width" />
	@Styles.Render("~/Content/css")
	@Scripts.Render("~/bundles/modernizr")
	</head>
	<body>
	<header>
	<div class="content-wrapper">
	<div class="float-left">
	<p class="site-title">@Html.ActionLink("your logo here", "Index", "Home")</p>
	</div>
	<div class="float-right">
	<section id="login">
	@Html.Partial("_LoginPartial")
	</section>
	<nav>
	<ul id="menu">
	<li>@Html.ActionLink("Home", "Index", "Home")</li>
	<li>@Html.ActionLink("About", "About", "Home")</li>
	<li>@Html.ActionLink("Contact", "Contact", "Home")</li>
	</ul>
	</nav>
	</div>
	</div>
	</header>
	<div id="body">
	@RenderSection("featured", required: false)
	<section class="content-wrapper main-content clear-fix">
	@RenderBody()
	</section>
	</div>
	<footer>
	<div class="content-wrapper">
	<div class="float-left">
	<p>© @DateTime.Now.Year - My ASP.NET MVC Application</p>
	</div>
	</div>
	</footer>

	@Scripts.Render("~/bundles/jquery")
	@RenderSection("scripts", required: false)
	</body>
	</html>
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Text;
	using System.Web.Mvc;
	using System.Web.Mvc.Html;
	using System.Web.Routing;

	namespace MvcApplication1 {
	public static class HtmlExtensions {
	public static MvcHtmlString ActionMenuItem(this HtmlHelper htmlHelper, string linkText, string actionName, string controllerName, object routeValues, object htmlAttributes) {
	var tag = new TagBuilder("li");

	var routeData = htmlHelper.ViewContext.RouteData;
	var controller = routeData.GetRequiredString("controller");
	var action = routeData.GetRequiredString("action");
	var area = routeData.DataTokens["area"] as string;

	var routesGiven = routeValues == null ? null : new RouteValueDictionary(routeValues);
	object an = null;
	if (routesGiven != null) routesGiven.TryGetValue("area", out an);
	var areaName = an as string;

	bool active = ((string.IsNullOrEmpty(area) && string.IsNullOrEmpty(areaName)) \|\| (area.Equals(areaName, StringComparison.OrdinalIgnoreCase)));
	active &= ((string.IsNullOrEmpty(controller) && string.IsNullOrEmpty(controllerName)) \|\| (controller.Equals(controllerName, StringComparison.OrdinalIgnoreCase)));
	active &= ((string.IsNullOrEmpty(action) && string.IsNullOrEmpty(actionName)) \|\| (action.Equals(actionName, StringComparison.OrdinalIgnoreCase)));

	if (active) tag.AddCssClass("active");

	tag.InnerHtml = htmlHelper.ActionLink(linkText, actionName, controllerName, routeValues, htmlAttributes).ToString();
	return MvcHtmlString.Create(tag.ToString());
	}
	}
	}