I’ve spent the better part of my day trying to solve this message while using NHibernate: “Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index”
My update and delete work just fine but the call to flush after a call to save() does not work. I don’t think it will be useful to post all of the code (there’s a lot) because I’m not sure what you’ll need to see at this point. My data access object I’m trying to save uses a composite key if that helps. Also, I’m using NHibernate.Mapping.Attributes to create my mapping.
It appears that in my stack trace NHibernate is attempting to send an invalid number of parameters to the ADO.Net class for the insert operation. That being said, I have trace set to true in order to view sql statements but the error is raised prior to the sql statement being sent to the output so I’m not sure what it’s attempting to build..
public void Insert(ProddataDAO Entity)
{
Entity.PSEQ = GetNewSeqID(Entity.PCUST); // <- because I'm using a composite key, this function gets my a unique value by a group
NHibernateHelperCGC.CurrentSession.Save(Entity);
NHibernateHelperCGC.CurrentSession.Flush(); // <-This raises the error
}
at System.Collections.ArrayList.get_Item(Int32 index) at
IBM.Data.DB2.iSeries.iDB2ParameterCollection.System.Collections.IList.get_Item(Int32
index) at NHibernate.Type.DecimalType.Set(IDbCommand st, Object
value, Int32 index) at
NHibernate.Type.NullableType.NullSafeSet(IDbCommand cmd, Object value,
Int32 index) at NHibernate.Type.NullableType.NullSafeSet(IDbCommand
st, Object value, Int32 index, ISessionImplementor session) at
NHibernate.Type.ComponentType.NullSafeSet(IDbCommand st, Object value,
Int32 begin, ISessionImplementor session) at
NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate(Object
id, Object[] fields, Object rowId, Boolean[] includeProperty,
Boolean[][] includeColumns, Int32 table, IDbCommand statement,
ISessionImplementor session, Int32 index) at
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id,
Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql,
Object obj, ISessionImplementor session) at
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id,
Object[] fields, Object obj, ISessionImplementor session) at
NHibernate.Action.EntityInsertAction.Execute() at
NHibernate.Engine.ActionQueue.Execute(IExecutable executable) at
NHibernate.Engine.ActionQueue.ExecuteActions(IList list) at
NHibernate.Engine.ActionQueue.ExecuteActions() at
NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource
session) at
NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent
event) at NHibernate.Impl.SessionImpl.Flush() at
WTS.Data.DB2.CGC.ProddataRepository.Insert(ProddataDAO Entity) in
C:\Documents and Settings\briant\My Documents\Visual Studio
2008\Projects\WTSCGCDAL\WTSCGCDAL\ProddataRepository.cs:line 73 at
WTS.WTSCGCAppInterface.ProductionDataUserControlBase.TestInsert() in
C:\Documents and Settings\briant\My Documents\Visual Studio
2008\Projects\WTSCGCAppInterface\WTSCGCAppInterface\ProductionDataUserControlBase.cs:line
483 at WTSCGCAppInterface.Window1.Button_Click_1(Object sender,
RoutedEventArgs e) in C:\Documents and Settings\briant\My
Documents\Visual Studio
2008\Projects\WTSCGCAppInterface\WTSCGCAppInterface\Window1.xaml.cs:line
48 at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object
target, RoutedEventArgs routedEventArgs) at
System.Windows.EventRoute.InvokeHandlersImpl(Object source,
RoutedEventArgs args, Boolean reRaised) at
System.Windows.UIElement.RaiseEventImpl(DependencyObject sender,
RoutedEventArgs args) at
System.Windows.UIElement.RaiseEvent(RoutedEventArgs e) at
System.Windows.Controls.Primitives.ButtonBase.OnClick() at
System.Windows.Controls.Button.OnClick() at
System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs
e) at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object
sender, MouseButtonEventArgs e) at
System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate
genericHandler, Object genericTarget) at
System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object
target) at
System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target,
RoutedEventArgs routedEventArgs) at
System.Windows.EventRoute.InvokeHandlersImpl(Object source,
RoutedEventArgs args, Boolean reRaised) at
System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender,
RoutedEventArgs args, RoutedEvent newEvent) at
System.Windows.UIElement.CrackMouseButtonEventAndReRaiseEvent(DependencyObject
sender, MouseButtonEventArgs e) at
System.Windows.UIElement.OnMouseUpThunk(Object sender,
MouseButtonEventArgs e) at
System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate
genericHandler, Object genericTarget) at
System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object
target) at
System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target,
RoutedEventArgs routedEventArgs) at
System.Windows.EventRoute.InvokeHandlersImpl(Object source,
RoutedEventArgs args, Boolean reRaised) at
System.Windows.UIElement.RaiseEventImpl(DependencyObject sender,
RoutedEventArgs args) at
System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean
trusted) at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs
input) at
System.Windows.Input.InputProviderSite.ReportInput(InputReport
inputReport) at
System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd,
InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x,
Int32 y, Int32 wheel) at
System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr
hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at
System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd,
Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at
MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam,
IntPtr lParam, Boolean& handled) at
MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at
System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate
callback, Object args, Boolean isSingleParameter) at
System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source,
Delegate callback, Object args, Boolean isSingleParameter, Delegate
catchHandler) at
System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback,
Object args, Boolean isSingleParameter, Delegate catchHandler) at
System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority
priority, TimeSpan timeout, Delegate method, Object args, Boolean
isSingleParameter) at
System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority
priority, Delegate method, Object arg) at
MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr
wParam, IntPtr lParam) at
MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at
System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame
frame) at
System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run() at
System.Windows.Application.RunDispatcher(Object ignore) at
System.Windows.Application.RunInternal(Window window) at
System.Windows.Application.Run(Window window) at
System.Windows.Application.Run() at WTSCGCAppInterface.App.Main()
in C:\Documents and Settings\briant\My Documents\Visual Studio
2008\Projects\WTSCGCAppInterface\WTSCGCAppInterface\obj\Debug\App.g.cs:line
0 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[]
args) at System.AppDomain.ExecuteAssembly(String assemblyFile,
Evidence assemblySecurity, String[] args) at
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Threading.ThreadHelper.ThreadStart()
This error usually appears when there are columns missing from your tables. So if a class has a property mapped to table column that is missing from the database then you will see this error.
Basically check for mismatches between your mappings and your database tables (missing columns, type mismatches etc). The problem may be on a related table/entity and not on the one you are trying to save.