Hi,

I got a strange exception in Persistent type :

System.Reflection.TargetInvocationException occurred
  Message=Exception has been thrown by the target of an invocation.
  Source=mscorlib
  StackTrace:
       at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
       at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)
       at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
       at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
       at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
       at System.Reflection.RuntimePropertyInfo.GetValue(Object obj, Object[] index)
       at Xtensive.Storage.Persistent.GetProperty[T](String fieldName)
       at Xtensive.Storage.Persistent.get_Item(String name)

  InnerException: System.NullReferenceException
       Message=Object reference not set to an instance of an object.
       Source=Xtensive.Storage
       StackTrace:
            at Xtensive.Storage.Internals.FieldAccessors.DefaultFieldAccessor`1.GetValue(Persistent obj)
            at Xtensive.Storage.Persistent.GetFieldValue[T](FieldInfo field)
            at Xtensive.Storage.Persistent.GetFieldValue[T](String fieldName)
            at MyBusinessObject.get_Rate() in

The original call is like this :

Xtensive.Storage.Model.FieldInfo fieldInfo;
      Persistent targetObject = GetTargetFromFieldName(entity, fieldName, out fieldInfo);
      return targetObject[fieldInfo.OriginalName];

Any idea?

I'm unable to reproduce this (it only happened one time)

Regards, Julien

Updated at 09.07.2010 8:21:19

I'm not sure : this object should not be removed in our application.

I was debugging the process at the time : could it be that Visual Studio called a property getter on a wrong thread for debug view and broke the current session? That would explain why I'm not able to reproduce this.

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