c# - The type or namespace name 'BundleCollection' could not be found (are you missing a using directive or an assembly reference?) -

c# - The type or namespace name 'BundleCollection' could not be found (are you missing a using directive or an assembly reference?) -

so, have mvc 4 project in c# , using visual studio web 2012 express.

i cannot compile projecto due error: type or namespace name 'bundlecollection' not found (are missing using directive or assembly reference?)

normally, mean library missing. after making quick search on net used nuget install microsoft.aspnet.web.optimization, still did not work.

what makes intriguing me bundlecollections should known application deafult. can imagine have added dependency messed up, can't know sure.

how can prepare problem? missing here?

code:

using system; using system.web; using system.web.optimization; namespace dockis { public class bundleconfig { // more info on bundling, visit http://go.microsoft.com/fwlink/?linkid=254725 public static void registerbundles(bundlecollection bundles) { iitemtransform cssfixer = new cssrewriteurltransform(); bundles.add(new scriptbundle("~/bundles/jquery").include( "~/scripts/jquery-{version}.js")); //... } } }

edit

after checking references folder tried running command install-package system.web.optimization, cannot install package. next error:

install-package : 1 or more errors occurred. @ line:1 char:16 + install-package <<<< system.web.optimization + categoryinfo : notspecified: (:) [install-package], aggregateexception + fullyqualifiederrorid : nugetcmdletunhandledexception,nuget.powershell.commands.installpackagecommand

what odd, fact running install-package system.web.optimization.less works, , fixes depencie problems, not of them. believe need first command work.

what doing wrong?

there no clear reply question. managed prepare project re-creating it, , downloading dlls in different order, closing , re-opening visual studio several times while doing it.

aparently there conflict between of packages, impossible guess until had re-created project scratch again.

running install-package microsoft.aspnet.web.optimization did solve problem after clean install however, recommend it.

i give thanks help.

c# .net asp.net-mvc-4 visual-studio-2012 nuget