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Design-time issue: Object reference not set to an instance of an object.

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Cube
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Paul
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Paul asked on 17 Aug 2009, 07:01 PM
I'm using SL Q2 2009 + the first beta version right after that.
I've placed two items into the radCube, both are Grids.  I've populated both with additional child items.  But I get the following issue during design-time under Expression 3:
------------------------------------------------------------------------------
XamlParseException: [Line: 0 Position: 0]
  --- Inner Exception ---
Object reference not set to an instance of an object.

StackTrace
at Telerik.Windows.Controls.RadCube.RenderFaces()
at Telerik.Windows.Controls.RadCube.RotateCube(Point3D verticalAxis, Double angle)
at Telerik.Windows.Controls.RadCube.OnApplyTemplate()
at System.Windows.FrameworkElement.OnApplyTemplate(IntPtr nativeTarget)
------------------------------------------------------------------------------
I noticed in the radCube properties that when this issue happens, the following brush properties are reset to NoBrush
  • Side2Background
  • Side3Background
  • Side3Background
  • Side4Background
  • Side5Background
  • Side6Background

If I manually set the brushes on each of these to a color, then the problem is cleared until sometime later -- after editing the Xaml.

Here's the Xaml for the radCube at the time of the error (it's inside a normal Grid):
------------------------------------------------------------------------------

 

 

<telerikNavigation:RadCube x:Name="radCubeMyWork" SelectedIndex="0" IsRotateOnStart="False" IsRotateYAxisOnly="True" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Side1Background="#FFF0F1CE" IsRotateOnClickEnabled="False">

 

 

<Grid x:Name="grdMyWork0">

 

<Grid.RowDefinitions>

 

 

 

 

<RowDefinition MinHeight="50"/>

 

</Grid.RowDefinitions>

 

 

<Grid.ColumnDefinitions>

 

 

<ColumnDefinition Width="0.9*"/>

 

 

<ColumnDefinition Width="24"/>

 

 

</Grid.ColumnDefinitions>

 

 

<telerikGridView:RadGridView x:Name="gvMyWork" Grid.Column="0" FontFamily="Fonts/SketchFlow Print.ttf#SketchFlow Print" d:LayoutOverrides="GridBox" ShowColumnHeaders="True" ShowGroupPanel="True" CanUserInsertRows="False" UseAlternateRowStyle="True" d:DataContext="{Binding}" ItemsSource="{Binding}" ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Visible" IsReadOnly="True" AutoGenerateColumns="True" Margin="0"/>

 

 

<Button x:Name="cmdMyWorkSettings" Grid.Column="1" FontFamily="Webdings" Height="24" Style="{StaticResource Button-Sketch}" Width="24" RenderTransformOrigin="0.5,0.5" Content="@" ToolTipService.ToolTip="My Work Preferences" VerticalAlignment="Top" d:LayoutOverrides="VerticalMargin">

 

 

<Button.RenderTransform>

 

 

<TransformGroup>

 

 

<ScaleTransform/>

 

 

<SkewTransform/>

 

 

<RotateTransform Angle="0"/>

 

 

<TranslateTransform/>

 

 

</TransformGroup>

 

 

</Button.RenderTransform>

 

 

</Button>

 

 

<Button x:Name="cmdMyWorkHelp" Click="cmdSearchHelp_Click" Grid.Column="1" FontFamily="Webdings" Height="24" Style="{StaticResource Button-Sketch}" Width="24" RenderTransformOrigin="0.5,0.5" Content="s" ToolTipService.ToolTip="Help with My Work" Margin="0,24,0,0" VerticalAlignment="Top">

 

 

<Button.RenderTransform>

 

 

<TransformGroup>

 

 

<ScaleTransform/>

 

 

<SkewTransform/>

 

 

<RotateTransform Angle="0"/>

 

 

<TranslateTransform/>

 

 

</TransformGroup>

 

 

</Button.RenderTransform>

 

 

</Button>

 

 

<Button x:Name="cmdViewMyWorkDetails" Click="cmdViewMyWorkDetails_Click" Grid.Column="1" FontFamily="Webdings" Height="24" Style="{StaticResource Button-Sketch}" Width="24" RenderTransformOrigin="0.542,1.625" Content="L" ToolTipService.ToolTip="View Request Details" Margin="0,48,0,0" VerticalAlignment="Top">

 

 

<Button.RenderTransform>

 

 

<TransformGroup>

 

 

<ScaleTransform/>

 

 

<SkewTransform/>

 

 

<RotateTransform Angle="0"/>

 

 

<TranslateTransform/>

 

 

</TransformGroup>

 

 

</Button.RenderTransform>

 

 

</Button>

 

 

</Grid>

 

 

<Grid x:Name="grdMyWorkSettings">

 

 

<Grid.RowDefinitions>

 

 

<RowDefinition MinHeight="50"/>

 

 

</Grid.RowDefinitions>

 

 

<Grid.ColumnDefinitions>

 

 

<ColumnDefinition Width="0.9*"/>

 

 

<ColumnDefinition Width="24"/>

 

 

</Grid.ColumnDefinitions>

 

 

<Button x:Name="cmdMyWorkMain" Grid.Column="1" FontFamily="Webdings" Height="24" Style="{StaticResource Button-Sketch}" Width="24" RenderTransformOrigin="0.5,0.5" Content="@" ToolTipService.ToolTip="My Work Preferences" VerticalAlignment="Top" d:LayoutOverrides="VerticalMargin">

 

 

<Button.RenderTransform>

 

 

<TransformGroup>

 

 

<ScaleTransform/>

 

 

<SkewTransform/>

 

 

<RotateTransform Angle="0"/>

 

 

<TranslateTransform/>

 

 

</TransformGroup>

 

 

</Button.RenderTransform>

 

 

</Button>

 

 

</Grid>

 

 

</telerikNavigation:RadCube>

 

 

------------------------------------------------------------------------------
Is there a default values problem with radCube in design-time?

After manually setting the backgrounds, here's the radCube element:
------------------------------------------------------------------------------

 

 

 

<telerikNavigation:RadCube x:Name="radCubeMyWork" SelectedIndex="0" IsRotateOnStart="False" IsRotateYAxisOnly="True" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Side1Background="#FFF0F1CE" IsRotateOnClickEnabled="False" Side2Background="#FFCC9B9B" Side3Background="#FF9BA98B" Side4Background="#FF70AFA9" Side5Background="#FF706FBE" Side6Background="#FF852239">
------------------------------------------------------------------------------
This is not a show stopper issue, it builds and runs but it'd be nice to look at the next time you update the radCube design-time code.

Thanks,
Paul from Minneapolis

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Valentin.Stoychev
Telerik team
answered on 18 Aug 2009, 05:55 AM
Hello Paul,

Thank you for reporting this. We will try to provide a fix for this with the next internal build.

I added 1000 Telerik points to your account.

Greetings,
Valentin.Stoychev
the Telerik team

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