[InvalidOperationException: “Visitor”的“understand”属性不能设置为“String”值。必须将该属性设置为类型为“Int32”的非 null 值。]
System.Data.Common.Internal.Materialization.ErrorHandlingValueReader`1.GetValue(DbDataReader reader, Int32 ordinal) +217
lambda_method(Closure , Shaper ) +994
System.Data.Common.Internal.Materialization.Shaper.HandleEntityAppendOnly(Func`2 constructEntityDelegate, EntityKey entityKey, EntitySet entitySet) +43
lambda_method(Closure , Shaper ) +65
System.Data.Common.Internal.Materialization.Coordinator`1.ReadNextElement(Shaper shaper) +164
System.Data.Common.Internal.Materialization.SimpleEnumerator.MoveNext() +87
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +484
System.Linq.Enumerable.ToList(IEnumerable`1 source) +54
Onpf.Service.VisitorServicer.GetLastVisitor(Int32 fairID, Int32 top) +1238
ASP._Page_Areas_preview_Views_Template_wsblh_品牌展会右边嵌套_cshtml.Execute() in d:\WWW\master\Areas\preview\Views\Template\wsblh\品牌展会右边嵌套.cshtml:26
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +107
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +90
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +218
System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) +277
System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) +106
System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName) +32
HtmlExtension.Import(HtmlHelper htmlHelper, String tempname) in D:\work\CCCEx\Tcm\HtmlExtension.cs:27
ASP._Page_Areas_preview_Views_Template_wsblh_品牌展会中国供应商_cshtml.Execute() in d:\WWW\master\Areas\preview\Views\Template\wsblh\品牌展会中国供应商.cshtml:79
System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +198
System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +107
System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +78
System.Web.Mvc.RazorView.RenderView(ViewContext viewContext, TextWriter writer, Object instance) +218
System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +107
System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +291
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +13
System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +23
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +245
System.Web.Mvc.<>c__DisplayClass1e.<InvokeActionResultWithFilters>b__1b() +22
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +176
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +324
System.Web.Mvc.Controller.ExecuteCore() +106
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +88
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +34
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +16
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +10
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +50
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +46
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +23
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +59
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +577
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +132
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +163
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