[argumentnullexception: value cannot be null.

parameter name: source]

system.linq.enumerable.tolist(ienumerable`1 source) +4118871

im.netshow.detail.areas.detail.controllers.homecontroller._recommendbrand(string imshownameid) +304

lambda_method(closure , controllerbase , object[] ) +104

system.web.mvc.actionmethoddispatcher.execute(controllerbase controller, object[] parameters) +14

system.web.mvc.reflectedactiondescriptor.execute(controllercontext controllercontext, idictionary`2 parameters) +214

system.web.mvc.controlleractioninvoker.invokeactionmethod(controllercontext controllercontext, actiondescriptor actiondescriptor, idictionary`2 parameters) +27

system.web.mvc.<>c__displayclass15.b__12() +55

system.web.mvc.controlleractioninvoker.invokeactionmethodfilter(iactionfilter filter, actionexecutingcontext precontext, func`1 continuation) +253

system.web.mvc.<>c__displayclass17.b__14() +21

system.web.mvc.controlleractioninvoker.invokeactionmethodfilter(iactionfilter filter, actionexecutingcontext precontext, func`1 continuation) +253

system.web.mvc.<>c__displayclass17.b__14() +21

system.web.mvc.controlleractioninvoker.invokeactionmethodwithfilters(controllercontext controllercontext, ilist`1 filters, actiondescriptor actiondescriptor, idictionary`2 parameters) +191

system.web.mvc.controlleractioninvoker.invokeaction(controllercontext controllercontext, string actionname) +324

system.web.mvc.controller.executecore() +106

system.web.mvc.controllerbase.execute(requestcontext requestcontext) +91

system.web.mvc.controllerbase.system.web.mvc.icontroller.execute(requestcontext requestcontext) +10

system.web.mvc.<>c__displayclassb.b__5() +34

system.web.mvc.async.<>c__displayclass1.b__0() +19

system.web.mvc.async.<>c__displayclass8`1.b__7(iasyncresult _) +10

system.web.mvc.async.wrappedasyncresult`1.end() +62

system.web.mvc.<>c__displayclasse.b__d() +48

system.web.mvc.securityutil.b__0(action f) +7

system.web.mvc.securityutil.processinapplicationtrust(action action) +22

system.web.mvc.mvchandler.endprocessrequest(iasyncresult asyncresult) +60

system.web.mvc.mvchandler.system.web.ihttpasynchandler.endprocessrequest(iasyncresult result) +9

system.web.mvc.<>c__displayclassa.b__9() +22

system.web.mvc.<>c__displayclass4.b__3() +10

system.web.mvc.serverexecutehttphandlerwrapper.wrap(func`1 func) +27

system.web.mvc.serverexecutehttphandlerwrapper.wrap(action action) +65

system.web.mvc.serverexecutehttphandlerasyncwrapper.endprocessrequest(iasyncresult result) +71

system.web.httpserverutility.executeinternal(ihttphandler handler, textwriter writer, boolean preserveform, boolean setpreviouspage, virtualpath path, virtualpath filepath, string physpath, exception error, string querystringoverride) +1097

[httpexception (0x80004005): error executing child request for handler 'system.web.mvc.httphandlerutil+serverexecutehttphandlerasyncwrapper'.]

system.web.httpserverutility.executeinternal(ihttphandler handler, textwriter writer, boolean preserveform, boolean setpreviouspage, virtualpath path, virtualpath filepath, string physpath, exception error, string querystringoverride) +3184375

system.web.httpserverutility.execute(ihttphandler handler, textwriter writer, boolean preserveform, boolean setpreviouspage) +76

system.web.httpserverutility.execute(ihttphandler handler, textwriter writer, boolean preserveform) +28

system.web.httpserverutilitywrapper.execute(ihttphandler handler, textwriter writer, boolean preserveform) +19

system.web.mvc.html.childactionextensions.actionhelper(htmlhelper htmlhelper, string actionname, string controllername, routevaluedictionary routevalues, textwriter textwriter) +483

system.web.mvc.html.childactionextensions.action(htmlhelper htmlhelper, string actionname, string controllername, routevaluedictionary routevalues) +83

system.web.mvc.html.childactionextensions.action(htmlhelper htmlhelper, string actionname, string controllername, object routevalues) +46

asp._page_areas_detail_views_home_index_cshtml.execute() in f:\website\netshow\areas\detail\views\home\index.cshtml:402

system.web.webpages.webpagebase.executepagehierarchy() +197

system.web.mvc.webviewpage.executepagehierarchy() +81

system.web.webpages.webpagebase.executepagehierarchy(webpagecontext pagecontext, textwriter writer, webpagerenderingbase startpage) +76

system.web.mvc.razorview.renderview(viewcontext viewcontext, textwriter writer, object instance) +222

system.web.mvc.buildmanagercompiledview.render(viewcontext viewcontext, textwriter writer) +115

system.web.mvc.viewresultbase.executeresult(controllercontext context) +295

system.web.mvc.controlleractioninvoker.invokeactionresult(controllercontext controllercontext, actionresult actionresult) +13

system.web.mvc.<>c__displayclass1c.b__19() +23

system.web.mvc.controlleractioninvoker.invokeactionresultfilter(iresultfilter filter, resultexecutingcontext precontext, func`1 continuation) +242

system.web.mvc.<>c__displayclass1e.b__1b() +21

system.web.mvc.controlleractioninvoker.invokeactionresultfilter(iresultfilter filter, resultexecutingcontext precontext, func`1 continuation) +242

system.web.mvc.<>c__displayclass1e.b__1b() +21

system.web.mvc.controlleractioninvoker.invokeactionresultfilter(iresultfilter filter, resultexecutingcontext precontext, func`1 continuation) +242

system.web.mvc.<>c__displayclass1e.b__1b() +21

system.web.mvc.controlleractioninvoker.invokeactionresultwithfilters(controllercontext controllercontext, ilist`1 filters, actionresult actionresult) +177

system.web.mvc.controlleractioninvoker.invokeaction(controllercontext controllercontext, string actionname) +324

system.web.mvc.controller.executecore() +106

system.web.mvc.controllerbase.execute(requestcontext requestcontext) +91

system.web.mvc.controllerbase.system.web.mvc.icontroller.execute(requestcontext requestcontext) +10

system.web.mvc.<>c__displayclassb.b__5() +34

system.web.mvc.async.<>c__displayclass1.b__0() +19

system.web.mvc.async.<>c__displayclass8`1.b__7(iasyncresult _) +10

system.web.mvc.async.wrappedasyncresult`1.end() +62

system.web.mvc.<>c__displayclasse.b__d() +48

system.web.mvc.securityutil.b__0(action f) +7

system.web.mvc.securityutil.processinapplicationtrust(action action) +22

system.web.mvc.mvchandler.endprocessrequest(iasyncresult asyncresult) +60

system.web.mvc.mvchandler.system.web.ihttpasynchandler.endprocessrequest(iasyncresult result) +9

system.web.callhandlerexecutionstep.system.web.httpapplication.iexecutionstep.execute() +9514812

以上是网络信息转载，信息真实性自行斟酌。