NullReferenceException at docking

[Michael]

Hi,
I'needed to check out the latest WPF Q3 Hotfix (2011.3.1122) and get a NullReferenceException within the telerik docking component.
It occur's when i call the Show Method of a window that contains docking components.
The Error did not occur when i used the official Q3 Release (2011.3.1116).
The call stack:

at Telerik.Windows.Controls.Docking.PaneGroupBase.OnPaneCommandCanExecute(Object sender, CanExecuteRoutedEventArgs e)
   at System.Windows.Input.CommandBinding.OnCanExecute(Object sender, CanExecuteRoutedEventArgs e)
   at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
   at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
   at System.Windows.Input.CommandManager.OnCanExecute(Object sender, CanExecuteRoutedEventArgs e)
   at System.Windows.UIElement.OnCanExecuteThunk(Object sender, CanExecuteRoutedEventArgs e)
   at System.Windows.Input.CanExecuteRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
   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 e)
   at Telerik.Windows.Controls.RadContextMenu.OnEventFired(Object sender, RoutedEventArgs args)
   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.RoutedCommand.CriticalCanExecuteWrapper(Object parameter, IInputElement target, Boolean trusted, CanExecuteRoutedEventArgs args)
   at System.Windows.Input.RoutedCommand.CanExecuteImpl(Object parameter, IInputElement target, Boolean trusted, Boolean& continueRouting)
   at System.Windows.Input.RoutedCommand.CriticalCanExecute(Object parameter, IInputElement target, Boolean trusted, Boolean& continueRouting)
   at System.Windows.Input.RoutedCommand.CanExecute(Object parameter, IInputElement target)
   at Telerik.Windows.Controls.RadMenuItem.CanExecuteApply()
   at Telerik.Windows.Controls.RadMenuItem.OnCommandParameterChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp)
   at System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at System.Windows.Data.BindingExpression.Activate(Object item)
   at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
   at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)
   at MS.Internal.Data.DataBindEngine.Run(Object arg)
   at MS.Internal.Data.DataBindEngine.OnLayoutUpdated(Object sender, EventArgs e)
   at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()
   at System.Windows.ContextLayoutManager.UpdateLayout()
   at System.Windows.UIElement.UpdateLayout()
   at System.Windows.Interop.HwndSource.SetLayoutSize()
   at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
   at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
   at System.Windows.Window.SetRootVisual()
   at System.Windows.Window.SetRootVisualAndUpdateSTC()
   at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
   at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
   at System.Windows.Window.CreateSourceWindowDuringShow()
   at System.Windows.Window.SafeCreateWindowDuringShow()
   at System.Windows.Window.ShowHelper(Object booleanBox)
   at System.Windows.Window.Show()


the Xaml:

<Window x:Class="MyWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
    Height="600" Width="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition/>
        </Grid.RowDefinitions>

        <telerik:RadDocking x:Name="docking" Grid.Row="2" Margin="2,0,2,2" BorderThickness="0" Background="Transparent" ContextMenuService.IsEnabled="False">
            <telerik:RadDocking.DocumentHost>
                <telerik:RadSplitContainer x:Name="splitContainer" BorderThickness="0">
                    <telerik:RadPaneGroup x:Name="dockManager" BorderThickness="1"  Background="Transparent" />
                </telerik:RadSplitContainer>
            </telerik:RadDocking.DocumentHost>

            <telerik:RadSplitContainer MaxWidth="300" InitialPosition="DockedLeft" Background="Transparent">
                <telerik:RadPaneGroup x:Name="leftPaneGroup" Background="Transparent"/>
            </telerik:RadSplitContainer>

            <telerik:RadSplitContainer MaxWidth="500" MinWidth="250" InitialPosition="DockedRight" Background="Transparent">
                <telerik:RadPaneGroup x:Name="actionsPaneGroup" Background="Transparent"/>
            </telerik:RadSplitContainer>
        </telerik:RadDocking>
    </Grid>
</Window>

there is no special code-behind.

Thanks in advance, Michael

[George]

Hi Michael,

Thank you for contacting us.


We are aware of this problem with the RadDocking control and we can confirm that it is already resolved and fix will be included in our internal build next week. Please, excuse us for any inconvenience caused.  

All the best,
George
the Telerik team