xpando/ExtendBundleCollection.cs

## _Layout.cshtml
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="width=device-width" />
  <title>@ViewBag.Title</title>
  <link href="@BundleTable.Bundles.ResolveBundleUrl("~/content/css")" rel="stylesheet" type="text/css" />
</head>
<body>
  <header>
    <div class="content-wrapper">
      <div class="float-left">
        <p class="site-title"><a href="/">ASP.NET Web API</a></p>
      </div>
    </div>
  </header>

  @RenderBody()

  <script src="@BundleTable.Bundles.ResolveBundleUrl("~/scripts/common")" type="text/javascript"></script>
</body>
</html>

## common.bundle
jquery-1.7.1.js
jquery-ui-1.8.17.js
jquery.unobtrusive-ajax.js
jquery.validate.js
knockout-2.0.0.debug.js
modernizr-2.0.6-development-only.js

## css.bundle
Site.css

## ExtendBundleCollection.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Optimization;
using System.IO;

namespace MvcApplication3
{
    public static class ExtendBundleCollection
    {
        public static void ConfigureJsBundles(this BundleCollection bundles, string virtualPath)
        {
            virtualPath = VirtualPathUtility.AppendTrailingSlash(virtualPath);

            var path = HttpContext.Current.Server.MapPath(virtualPath);

            if (Directory.Exists(path))
            {
                foreach (var config in Directory.GetFiles(path, "*.bundle"))
                {
                    var bundleName = Path.GetFileNameWithoutExtension(config);
                    var bundlePath = VirtualPathUtility.Combine(virtualPath, bundleName);
                    var bundle     = new Bundle(bundlePath, new JsMinify());

                    var scriptPaths = File.ReadLines(config);
                    foreach (var relPath in scriptPaths)
                    {
                        var scriptPath = VirtualPathUtility.Combine(virtualPath, relPath);
                        bundle.AddFile(scriptPath, true);
                    }

                    bundles.Add(bundle);
                }
            }
        }

        public static void ConfigureCssBundles(this BundleCollection bundles, string virtualPath)
        {
            virtualPath = VirtualPathUtility.AppendTrailingSlash(virtualPath);

            var path = HttpContext.Current.Server.MapPath(virtualPath);

            if (Directory.Exists(path))
            {
                foreach (var config in Directory.GetFiles(path, "*.bundle"))
                {
                    var bundleName = Path.GetFileNameWithoutExtension(config);
                    var bundlePath = VirtualPathUtility.Combine(virtualPath, bundleName);
                    var bundle = new Bundle(bundlePath, new CssMinify());

                    var scriptPaths = File.ReadLines(config);
                    foreach (var relPath in scriptPaths)
                    {
                        var scriptPath = VirtualPathUtility.Combine(virtualPath, relPath);
                        bundle.AddFile(scriptPath, true);
                    }

                    bundles.Add(bundle);
                }
            }
        }
    }
}

## Global.asax.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Http;
using System.Web.Mvc;
using System.Web.Optimization;
using System.Web.Routing;

namespace MvcApplication3
{
    // Note: For instructions on enabling IIS6 or IIS7 classic mode,
    // visit http://go.microsoft.com/?LinkId=9394801

    public class WebApiApplication : System.Web.HttpApplication
    {
        public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
        }

        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );

            routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
            );
        }

        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();

            RegisterGlobalFilters(GlobalFilters.Filters);
            RegisterRoutes(RouteTable.Routes);

            //BundleTable.Bundles.RegisterTemplateBundles();

            BundleTable.Bundles.ConfigureCssBundles("~/content");
            BundleTable.Bundles.ConfigureJsBundles("~/scripts");
        }
    }
}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8" />
	<meta name="viewport" content="width=device-width" />
	<title>@ViewBag.Title</title>
	<link href="@BundleTable.Bundles.ResolveBundleUrl("~/content/css")" rel="stylesheet" type="text/css" />
	</head>
	<body>
	<header>
	<div class="content-wrapper">
	<div class="float-left">
	<p class="site-title"><a href="/">ASP.NET Web API</a></p>
	</div>
	</div>
	</header>

	@RenderBody()

	<script src="@BundleTable.Bundles.ResolveBundleUrl("~/scripts/common")" type="text/javascript"></script>
	</body>
	</html>
	jquery-1.7.1.js
	jquery-ui-1.8.17.js
	jquery.unobtrusive-ajax.js
	jquery.validate.js
	knockout-2.0.0.debug.js
	modernizr-2.0.6-development-only.js
	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Web;
	using System.Web.Optimization;
	using System.IO;

	namespace MvcApplication3
	{
	public static class ExtendBundleCollection
	{
	public static void ConfigureJsBundles(this BundleCollection bundles, string virtualPath)
	{
	virtualPath = VirtualPathUtility.AppendTrailingSlash(virtualPath);

	var path = HttpContext.Current.Server.MapPath(virtualPath);

	if (Directory.Exists(path))
	{
	foreach (var config in Directory.GetFiles(path, "*.bundle"))
	{
	var bundleName = Path.GetFileNameWithoutExtension(config);
	var bundlePath = VirtualPathUtility.Combine(virtualPath, bundleName);
	var bundle = new Bundle(bundlePath, new JsMinify());

	var scriptPaths = File.ReadLines(config);
	foreach (var relPath in scriptPaths)
	{
	var scriptPath = VirtualPathUtility.Combine(virtualPath, relPath);
	bundle.AddFile(scriptPath, true);
	}

	bundles.Add(bundle);
	}
	}
	}

	public static void ConfigureCssBundles(this BundleCollection bundles, string virtualPath)
	{
	virtualPath = VirtualPathUtility.AppendTrailingSlash(virtualPath);

	var path = HttpContext.Current.Server.MapPath(virtualPath);

	if (Directory.Exists(path))
	{
	foreach (var config in Directory.GetFiles(path, "*.bundle"))
	{
	var bundleName = Path.GetFileNameWithoutExtension(config);
	var bundlePath = VirtualPathUtility.Combine(virtualPath, bundleName);
	var bundle = new Bundle(bundlePath, new CssMinify());

	var scriptPaths = File.ReadLines(config);
	foreach (var relPath in scriptPaths)
	{
	var scriptPath = VirtualPathUtility.Combine(virtualPath, relPath);
	bundle.AddFile(scriptPath, true);
	}

	bundles.Add(bundle);
	}
	}
	}
	}
	}