ASP.NET网页编程之ASP.NET MVC 3晋级至MVC 5.1的遭受：“已增加了具有不异键的项”仓酷云 ... - 仓酷云

System.ArgumentException:已增加了具有不异键的项。(Anitemwiththesamekeyhasalreadybeenadded)在System.Collections.Generic.Dictionary`2.Insert(TKeykey,TValuevalue,Booleanadd)在System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionarybackingStore,Stringprefix,Objectvalue)在System.Web.Mvc.JsonValueProviderFactory.AddToBackingStore(EntryLimitedDictionarybackingStore,Stringprefix,Objectvalue)在System.Web.Mvc.JsonValueProviderFactory.GetValueProvider(ControllerContextcontrollerContext)在System.Web.Mvc.ValueProviderFactoryCollection.GetValueProvider(ControllerContextcontrollerContext)在System.Web.Mvc.ControllerBase.get_ValueProvider()在System.Web.Mvc.ControllerActionInvoker.GetParameterValue(ControllerContextcontrollerContext,ParameterDescriptorparameterDescriptor)在System.Web.Mvc.ControllerActionInvoker.GetParameterValues(ControllerContextcontrollerContext,ActionDescriptoractionDescriptor)在System.Web.Mvc.Async.AsyncControllerActionInvoker.c__DisplayClass21.<BeginInvokeAction>b__19(AsyncCallbackasyncCallback,ObjectasyncState)在System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResultBase`1.Begin(AsyncCallbackcallback,Objectstate,Int32timeout)在System.Web.Mvc.Async.AsyncResultWrapper.Begin[TResult](AsyncCallbackcallback,Objectstate,BeginInvokeDelegatebeginDelegate,EndInvokeDelegate`1endDelegate,Objecttag,Int32timeout)在System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContextcontrollerContext,StringactionName,AsyncCallbackcallback,Objectstate)

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varpagingBuider={"PageIndex":1};functionbuildPaging(pageIndex){pagingBuider.pageIndex=pageIndex;$.ajax({data:JSON.stringify(pagingBuider),contentType:application/json;charset=utf-8});}

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{"PageIndex":1,"pageIndex":2}

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privatestaticvoidAddToBackingStore(EntryLimitedDictionarybackingStore,stringprefix,objectvalue){IDictionary<string,object>d=valueasIDictionary<string,object>;if(d!=null

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