Bug occurring when changing selected date on Radcalender

[SPE]

Hi,

I got the following error report and searched a bit for similar posts in the Silverlight forum.

I found 3 posts asking about exactly the same error as this one, written between 2011 and 2012,
and all of them still remain unresolved until now.

But as these posts are more than a year ago, I'd like to know if you have come up with some possible workarounds for this error in the meantime.

I am currently using the 2011 2Q version.

Thank you in advance for your kind reply.

Sunmin


System.NullReferenceException: [Arg_NullReferenceException]
인수:
디버깅 리소스 문자열을 사용할 수 없습니다. 종종 키와 인수가 문제를 진단할 수 있는 충분한 정보를 제공합니다. http://go.microsoft.com/fwlink/?linkid=106663&Version=5.1.20513.00&File=mscorlib.dll&Key=Arg_NullReferenceException를 참조하십시오.
   위치 Telerik.Windows.WeakReferenceList`1.WeakReferenceEnumerator.get_Current()
   위치 Telerik.Windows.Controls.SelectionChanger`1.SynchronizeInternalSelection()
   위치 Telerik.Windows.Controls.SelectionChanger`1.End()
   위치 Telerik.Windows.Controls.SelectionChanger`1.AddJustThis(T item)
   위치 Telerik.Windows.Controls.RadCalendar.AddToSelection(DateTime selectedDate, Boolean controlKeyDown, Boolean shiftKeyDown)
   위치 Telerik.Windows.Controls.RadCalendar.OnSelectedDateChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
   위치 System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   위치 System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   위치 System.Windows.DependencyObject.RefreshExpression(DependencyProperty dp)
   위치 System.Windows.Data.BindingExpression.SendDataToTarget()
   위치 System.Windows.Data.BindingExpression.SourcePropertyChanged(PropertyPathListener sender, PropertyPathChangedEventArgs args)
   위치 System.Windows.PropertyPathListener.ReconnectPath()
   위치 System.Windows.PropertyPathListener.RaisePropertyPathStepChanged(PropertyPathStep source)
   위치 System.Windows.PropertyAccessPathStep.RaisePropertyPathStepChanged(PropertyListener source)
   위치 System.Windows.DependencyPropertyListener.SourcePropertyChanged(DependencyObject sender, DependencyProperty dp)
   위치 System.Windows.Data.WeakDependencyPropertyChangedListener.SourcePropertyChanged(DependencyObject sender, DependencyProperty dp)
   위치 System.Windows.DPChangedEventHandler.Invoke(DependencyObject sender, DependencyProperty dp)
   위치 System.Windows.DependencyObject.OnPropertyChanged(DependencyProperty dp)
   위치 System.Windows.FrameworkElement.OnPropertyChanged(DependencyProperty dp)
   위치 System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   위치 System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   위치 System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
   위치 Telerik.Windows.Controls.RadDateTimePicker.OnSelectedValueChanged()
   위치 Telerik.Windows.Controls.RadDateTimePicker.OnSelectedValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   위치 Telerik.Windows.PropertyMetadata.PropertyChangeHook.OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   위치 System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   위치 System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   위치 System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
   위치 Telerik.Windows.Controls.RadDateTimePicker.OnDateTimeTextChanged()
   위치 Telerik.Windows.Controls.RadDateTimePicker.OnDateTimeTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   위치 Telerik.Windows.PropertyMetadata.PropertyChangeHook.OnPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   위치 System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
   위치 System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
   위치 System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet, Boolean isBindingInStyleSetter)
   위치 Telerik.Windows.Controls.RadDateTimePicker.ProcessKey(KeyEventArgs e)
   위치 Telerik.Windows.Controls.RadDateTimePicker.OnKeyDown(KeyEventArgs e)
   위치 System.Windows.Controls.Control.OnKeyDown(Control ctrl, EventArgs e)
   위치 MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, Int32 actualArgsTypeIndex, String eventName, UInt32 flags)

[Alek]

Hi Sunmin,

Unfortunately, we did not manage to reproduce the issue.
We tested it under the latest official release. As an attached file you can find a video showing our approach. If you are doing something different please send us details about the case including exact dll version and steps to reproduce. It would be of great help if there is a way to send us a sample where the issue can be seen. 

Regards,
Alek
Telerik