[InvalidOperationException: ExecuteReader 要求已打开且可用的 Connection。连接的当前状态为打开。]
System.Data.SqlClient.SqlConnection.GetOpenConnection(String method) +3305707
System.Data.SqlClient.SqlConnection.ValidateConnectionForExecute(String method, SqlCommand command) +98
System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async) +310
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry) +155
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +83
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +198
NPoco.Database.ExecuteReaderHelper(IDbCommand cmd) in d:\Adam\projects\NPoco\src\NPoco\Database.cs:1797
NPoco.<Query>d__7`1.MoveNext() in d:\Adam\projects\NPoco\src\NPoco\Database.cs:819
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +436
System.Linq.Enumerable.ToList(IEnumerable`1 source) +70
Electric.WebUI.Areas.Auto.Controllers.NewsController.ZiXun(Int32 cateid) +410
lambda_method(Closure , ControllerBase , Object[] ) +141
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +280
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +80
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +454
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +658
System.Web.Mvc.Controller.ExecuteCore() +143
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +91
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +57
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +25
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +36
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
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