Question

当我正在运行的存储过程执行mini-profiler时抛出一个空引用并导致我的应用程序停止。在这种情况下，SP不会返回任何内容。

这是stacktrace：

   at MvcMiniProfiler.MiniProfiler.AddSqlTiming(SqlTiming stats) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\MiniProfiler.cs:line 274
   at MvcMiniProfiler.SqlTiming..ctor(DbCommand command, ExecuteType type, MiniProfiler profiler) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\SqlTiming.cs:line 137
   at MvcMiniProfiler.SqlProfiler.ExecuteStartImpl(DbCommand command, ExecuteType type) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\SqlProfiler.cs:line 39
   at MvcMiniProfiler.SqlProfilerExtensions.ExecuteStart(SqlProfiler sqlProfiler, DbCommand command, ExecuteType type) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\SqlProfiler.cs:line 93
   at MvcMiniProfiler.MiniProfiler.MvcMiniProfiler.Data.IDbProfiler.ExecuteStart(DbCommand profiledDbCommand, ExecuteType executeType) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\MiniProfiler.IDbProfiler.cs:line 14
   at MvcMiniProfiler.Data.ProfiledDbCommand.ExecuteDbDataReader(CommandBehavior behavior) in C:\Users\sam\Desktop\mvc-mini-profiler\MvcMiniProfiler\Data\ProfiledDbCommand.cs:line 158
   at System.Data.Common.DbCommand.ExecuteReader()
   at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
   at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
   at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
   at System.Data.Linq.DataContext.ExecuteMethodCall(Object instance, MethodInfo methodInfo, Object[] parameters)
   at NetINFO.NetINFODataContext.usp_SRM_GetPlansByType(Nullable`1 sRM_ID, Nullable`1 sRM_PlanTypeID) in C:\Code\netinfo\NetInfo.Web\App_Data\NetINFO.designer.cs:line 1949
   at NetINFO.NetCMG.SRM.GetSRMPlans(Int32 pPlanType) in C:\Code\netinfo\NetInfo.Web\pages\NetCMG\classes\SRM.cs:line 673
   at NetINFO.NetCMG.SRM.Validate() in C:\Code\netinfo\NetInfo.Web\pages\NetCMG\classes\SRM.cs:line 540
   at NetCMG.Controls.TicketErrorsCtl.ValidateTicket(SRM Ticket) in C:\Code\netinfo\NetInfo.Web\pages\NetCMG\Controls\TicketErrorsCtl.ascx.cs:line 29
   at NetCMG.Controls.TicketErrorsCtl.Page_Load(Object sender, EventArgs e) in C:\Code\netinfo\NetInfo.Web\pages\NetCMG\Controls\TicketErrorsCtl.ascx.cs:line 16
   at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
   at System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e)
   at System.Web.UI.Control.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Answer 1

我终于找到了上述问题的解决方案。错误发生在使用网格的SQL数据源的旧版webforms应用程序上。 sql数据源使用'ProviderName'属性。删除此属性后，一切都开始工作了。

Answer 2

出现同样的问题：NRE从应用程序开始。发生例外at MvcMiniProfiler.MiniProfiler.AddSqlTiming(SqlTiming stats)

问题原因：Application_AuthenticateRequest()中的数据库调用

问题解决方案：MiniProfiler.Start();已移至Application_AuthenticateRequest()方法的末尾。

mini-profiler nullreferenceexception

2 个答案: