Server Error in '/' Application.

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   cni_online.Utils._Lambda$__187(Documento s) in D:\Users\Aurelio\Documents\Visual Studio 2010\Projects\cni-online3\cni-online3\Function\Utils.vb:366
   System.Linq.EnumerableSorter`2.ComputeKeys(TElement[] elements, Int32 count) +91
   System.Linq.EnumerableSorter`1.Sort(TElement[] elements, Int32 count) +21
   System.Linq.<GetEnumerator>d__1.MoveNext() +232
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +186
   System.Linq.Enumerable.ToList(IEnumerable`1 source) +61
   cni_online.Utils.filtraDocumenti(DocumentSearch& documentiDaRicercare, ModelStateDictionary& ModelState, BancaDatiSQLEntities db, Int32 defaultPageSize) in D:\Users\Aurelio\Documents\Visual Studio 2010\Projects\cni-online3\cni-online3\Function\Utils.vb:413
   cni_online.CircolariController.RisultatoRicerca(Nullable`1 idTipoFonte, Nullable`1 idTipoSessione, String annoDocumento, String numeroDocumento, String titoloDocumento, String sortOrder, String fieldSort, Nullable`1 page, Boolean changeOrder) in D:\Users\Aurelio\Documents\Visual Studio 2010\Projects\cni-online3\cni-online3\Controllers\CircolariController.vb:94
   lambda_method(Closure , ControllerBase , Object[] ) +451
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +19
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +224
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +57
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +260
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +26
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +205
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +326
   System.Web.Mvc.Controller.ExecuteCore() +109
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +92
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +12
   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 _) +15
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +59
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +48
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +12
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +24
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +66
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +11
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9851493
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +50
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +163


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0