[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
来源：仪器信息网
以上是网络信息转载，信息真实性自行斟酌。
