未将对象引用设置到对象的实例。

[NullReferenceException: 未将对象引用设置到对象的实例。] WlStock.Web.Controllers.HuDongController.BBSGoodDetail(String stockno, Int32 topicId, Int32 bbsType, Int32 DataType) in I:\SVN\万隆网Web\Dev\Code\WlStockWeb\trunk2\WlStock.Web\Controllers\HuDongController.cs:1054 lambda_method(Closure , ControllerBase , Object[] ) +306 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +255 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +34 System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +76 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +433 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +623 System.Web.Mvc.Controller.ExecuteCore() +137 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91 System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +54 System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +25 System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +51 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602 System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128