asp.net 4.5脚本捆绑也没有bundeling也没有缩小

我将一个项目从asp.net 3.5升级到4.5,以便使用脚本捆绑和 javascript的缩小.现在我把它全部运行了,脚本都出现在我定义的包中但是它们没有在一个脚本中“捆绑”在一起而且它们没有缩小.

继承人我拥有的……

default.aspx包含：

<asp:ScriptManager
ID="scriptmanager"
LoadScriptsBeforeUI="false"
runat="server"
    ScriptMode="Release"
    EnableScriptLocalization="false"
>
    <Scripts>
        <%--Framework Scripts--%>
        <asp:ScriptReference Path="~/bundles/MyBundle" ScriptMode="Release"/>
        <%--Site Scripts--%>
    </Scripts>
</asp:ScriptManager>

Global.asax中的Application_Start：

BundleTable.EnableOptimizations = true;
BundleConfig.RegisterBundles(BundleTable.Bundles);

BundleConfig.cs：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Optimization;

namespace MyNameSpace
{
    public class BundleConfig
    {
        // For more information on Bundling,visit http://go.microsoft.com/fwlink/?LinkId=254726
        public static void RegisterBundles(BundleCollection bundles)
        {
            bundles.Add(new ScriptBundle("~/bundles/MyBundle").Include(
                "~/Scripts/WebForms/WebForms.js","~/Scripts/WebForms/MSAjax/MicrosoftAjax.js","~/Scripts/WebForms/MSAjax/MicrosoftAjaxWebForms.js","~/Scripts/WebForms/TreeView.js","~/Scripts/WebForms/Focus.js","~/Scripts/WebForms/MenuStandards.js"));

        }
    }
}

我甚至在web.config中关闭了调试,即使我尝试在scriptmanager中强制释放模式以及脚本引用.

<compilation debug="false" batch="true" targetFramework="4.5">

输出仍然是几个引用：

<script src="/MyProj/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZA6EiyQ1YRW47qIzscWLzWU7jP_7DjoC2XbU7kCBkgYcJdoeAwqaVpUMnbWRsvhdMw2&amp;t=634896541540000000" type="text/javascript"></script>
<script src="/MyProj/ScriptResource.axd?d=zvkqIRNUspAvS1yKeFhMb4kS_IY-Q_9Yn_KOfmzKLnliETz8uip5T2BUr1JOPE4XV1bmnifY3Eg8vrX8bPLYT71P0Kf8DwEcoRw5fj2tqHdQSorRXVpasfsMXeJLHbT_alkHjf2wIrgxLzxYvocKIA2&amp;t=12e197aa" type="text/javascript"></script>
<script src="/MyProj/ScriptResource.axd?d=NJmAwtEo3Ipnlaxl6CMhvpbyEkpQU7AWZ3ZOrSRn7cdqTBUwP_3lu0l46EnEFBAkBOoC5I7IpMnx8u7VKe4fESCWGvycDq7dTXHsUSTg-j9u4S2Poz38UkmBa7Ta1cXyZ9DcFfKo7RpgjmNNoFjlZgbsHJEPN_AnazProCOQuws1&amp;t=6119e399" type="text/javascript"></script>
<script src="/MyProj/ScriptResource.axd?d=dwY9oWetJoJoVpgL6Zq8OPgCkw9mWNaQmhnwlbrOgCXqxXAsNin9JxaUjtv38gzHz78sozRMjuXYeM_GE0v4htSt6vWwOO4-gOCLfSt6rVOvxbpcCXCLN9jI7fWPkTL2Eq7a9kcN8S4MasueIxDV0rhf-htD32XuwA259deRSNs1&amp;t=6119e399" type="text/javascript"></script>
<script src="/MyProj/WebResource.axd?d=JoBkLzP19aTuxbWOhHobYmKZKUo0k_GoCFbuT9i-BqZJQhy_7Dl0oCPSUy3hiGltbFyiUTxWBZD-5YWblJpSZg2&amp;t=634896541540000000" type="text/javascript"></script>

我错过了什么？
如何让捆绑包中的所有脚本只输出一个引用并缩小其中的代码？

谢谢,J

@Scripts.Render("~/bundles/lib")

<script src="/bundles/lib?v=gGKSj7TFmjDTZAjdEzBrqOOu9aGB6i4Tq0mHfaLUk_c1"></script>

var myBundle = new ScriptBundle("~/bundles/MyBundle").Include(
                "~/Scripts/WebForms/WebForms.js","~/Scripts/WebForms/MenuStandards.js")
myBundle.Transforms.Add(new JsMinify());
bundles.Add(myBundle);