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Exception in RibbonView.KeyTipService

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RibbonView and RibbonWindow
This is a migrated thread and some comments may be shown as answers.
Dominic
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Dominic asked on 02 Dec 2016, 02:07 PM

Hello,

with the Telerik version >= 2016.3.914.1050 we are getting following exception sporadically.

We have no reproduction case and do not know what the reason is.

Our code does not ouccur in the stacktrace, so we have no startingpoint we to search or look at.

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)

 

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Dominic
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answered on 02 Dec 2016, 02:19 PM

Hello,

I looked at the sourcecode an propably found the problem. there is a null check for this.Ribbon, but the null check seems to short. The check needs to include the more code which is using "this.Ribbon".

 

private void DetachHandlers()
{
    this.ClearSession();
    if (this.Ribbon != null)     <---here is a null check for "this.Ribbon"
    {
        this.Ribbon.SizeChanged -= new SizeChangedEventHandler(this.ClearSessionHandler);
        this.Ribbon.Loaded -= new RoutedEventHandler(this.Ribbon_Loaded);
        this.Ribbon.Unloaded -= new RoutedEventHandler(this.Ribbon_Unloaded);
    }
    if (this.openedRootVisuals != null)    <--here is a null check for "this.Ribbon" missing
    {
        RoutedEvent eventFromActivationMode = KeyTipService.GetEventFromActivationMode(KeyTipService.GetActivationMode(this.Ribbon));   <--here is the null exception
        foreach (UIElement openedRootVisual in this.openedRootVisuals)
        {
            this.DetachKeyboardEvents(openedRootVisual, eventFromActivationMode);
            openedRootVisual.RemoveHandler(UIElement.MouseLeftButtonUpEvent, new MouseButtonEventHandler(this.ClearSessionHandler));
        }
    }
    if (KeyTipService.ribbonReferences.FirstOrDefault<RadRibbonView>((RadRibbonView x) => x == this.Ribbon) != null)
    {
        KeyTipService.ribbonReferences.Remove(this.Ribbon);
    }
                               <--the null check for "this.Ribbon" should end here
 
    this.openedRootVisuals = null;
    this.rootElement = null;
    this.tips = null;
    this.tipsStack = null;
    this.focusedElement = null;
    this.isHandlersAttached = false;
    KeyTipService.keytipServiceReference = null;
    this.UnfocusKeyboardNavigationElement();
    this.currentKeyboardNavigationElement = null;
    this.initialTips.Clear();
    this.keyboardTips.Clear();
    this.nestedPopupsStack.Clear();
    this.isKeyboardNavigationActive = false;
}
0
Milena
Telerik team
answered on 07 Dec 2016, 09:20 AM
Hello Dominic, 

Thank you for reporting this issue and suggesting a possible solution. We would be glad to fix this issue, but I’m afraid that we cannot do this without a project and steps to reproduce it locally. Otherwise it would be a blind fix and we cannot be sure that it solve the issue and also we cannot test it. Could you please elaborate a bit more on this scenario by sending us an isolate project with steps to reproduce. This way we can debug it locally and will be able to provide you with more information on that matter.

As for the suggested solution - this method could be improved, however  we cannot be sure that the issue is connected only with DetachHandlers and not with more complex section of the code for KeyTips. This is why we prefer to debug it locally.

Thank you in advance for your cooperation.

Regards,
Milena
Telerik by Progress
Do you need help with upgrading your AJAX, WPF or WinForms project? Check the Telerik API Analyzer and share your thoughts.
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Dominic
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answered on 07 Dec 2016, 09:58 AM

Hello Milena,

as I already wrote, we cannot reproduce it :-(

We have the ribbon only in one screen, mostly we use the standard toolbar. So it could happen, that the ribbon is in screen and everything is ok, but sometimes later on, when the ribbon is already closed the errors occurs. But only sometimes.

My suggestion propably fixes not the source of the probem, but as you also stated, it could and should improved, because it is obviously unsafe and produces erros.

It crashes on DetachingHandlers(), so this would be a could place to fix, because ,it wants to Detach() itself.

The problem is, itoccurs the with every keystoke in the application, doesn´t matter where, because the hander did not get detached and listens in the background. We have customers, they got !!several thousend exceptions!!.

For demonstration, I attached a small logfile.

Our only way around try to !!ignore these Telerik Exceptions!! in the global application handler, and this could not be the solution.

Regards,

Dominic

 

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Milena
Telerik team
answered on 08 Dec 2016, 05:15 PM
Hello Dominic, 

Thank you for the additional information and the feedback. I was able to reproduce the issue locally in scenario with TextBox and adding and removing the ribbon on keydown. I'm not sure if this is close to your scenario, but it is a start point. I logged a bug in our FeedbackPortal where you can track its progress andI have also updated your Telerik points as a small appreciation for your cooperation.

Please excuse us for the inconvenience caused.

Regards,
Milena
Telerik by Progress
Do you need help with upgrading your AJAX, WPF or WinForms project? Check the Telerik API Analyzer and share your thoughts.
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Dominic
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Rank 1
answered on 16 Dec 2016, 11:17 AM

Hello Milena,

nice to hear, that you were able to reproduce the issue. When can we expect a fix?

Out logfiles get pollutes with several megabytes of exceptions every day. When the errors ocurrs, it happens over and over again and produced NullException with every keystroke thousend and thousends and we don´t know if this a has other side effects.

 

Here ist a part of out logfile....

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:05,600 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)
  
[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:05,601 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:06,481 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:06,482 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:07,176 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:07,177 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:07,545 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:07,545 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:08,872 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:08,873 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:09,192 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:09,193 tabatabair 192.168.232.5 ERROR 17 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

[Arg_NullReferenceException]
Argumente: 
Debuggingressourcen-Zeichenfolgen sind nicht verfügbar. Oft enthalten der Schlüssel und die Argumente genügend Informationen zur Diagnose des Problems. Weitere Informationen erhalten Sie unter http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.41212.00&File=mscorlib.dll&Key=Arg_NullReferenceException
StackTrace:
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.GetActivationMode(DependencyObject obj)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.DetachHandlers()
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.HandleKey(KeyEventArgs args)
   bei Telerik.Windows.Controls.RibbonView.KeyTipService.RibbonKeyUp(Object sender, KeyEventArgs e)
   bei MS.Internal.CoreInvokeHandler.InvokeEventHandler(UInt32 typeIndex, Delegate handlerDelegate, Object sender, Object args)
   bei MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)
2016-12-16 12:05:09,705 tabatabair 192.168.232.5 ERROR 19 Bdl.DialogCrm.Silverlight - 192.168.232.5.---> #### Client EXCEPTION (user: tabatabair, ip: 192.168.232.5, lastControl: KampagnenManagerMainControl, lastDataKey: Kampagnen.GetSpotAuflage, Browser: <out of Browser>)

0
Accepted
Milena
Telerik team
answered on 16 Dec 2016, 01:33 PM
Hello Dominic, 

The bug was fixed last week and it is included in our latest internal build (LIB) from 12.12.2016. You can download it from your account  and test your product with this version, so that you can verify the issue is indeed now gone. Please let us know if there is anything we have missed.

Please note that the LIB is not an official version and use it in notion in mind. We do not recommend it for production use. This fix will be included in our upcoming release, which is scheduled for January.

In addition I would like to add that in the future if you are using our FeedbackPortal you can take advantage of following an item there. This way you will be notified when its status is changed. 

I'm looking forward to your reply.

Regards,
Milena
Telerik by Progress
Try our brand new, jQuery-free Angular 2 components built from ground-up which deliver the business app essential building blocks - a grid component, data visualization (charts) and form elements.
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Asked by
Dominic
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Answers by
Dominic
Top achievements
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Milena
Telerik team
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