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Cannot host multiple RadDocking controls in TabItems of a TabControl

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Docking
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Alan Adorjan
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Alan Adorjan asked on 30 Mar 2010, 06:55 AM
I working on an app where I would like to have a Window with a single TabControl and a single RadDocking control in each one of its TabItems.  This works as long as the docking control is the content of the TabItem control.  As soon as something comes in between the two (such as the Grid control in the sample code), the exception below is thrown.  Do you know if this scenario is possible?  I'm using 2010 Q1.
    
    <TabControl> 
        <TabItem Header="Foo"
            <Grid> 
                <td:RadDocking /> 
            </Grid> 
        </TabItem> 
        <TabItem Header="Bar"
            <Grid> 
                <td:RadDocking /> 
            </Grid> 
        </TabItem> 
    </TabControl> 

System.InvalidOperationException: Specified element is already the logical child of another element. Disconnect it first.
   at System.Windows.FrameworkElement.ChangeLogicalParent(DependencyObject newParent)
   at MS.Internal.FrameworkObject.ChangeLogicalParent(DependencyObject newParent)
   at System.Windows.FrameworkElement.AddLogicalChild(Object child)
   at System.Windows.Controls.ContentControl.OnContentChanged(Object oldContent, Object newContent)
   at System.Windows.Window.OnContentChanged(Object oldContent, Object newContent)
   at Telerik.Windows.Controls.Docking.FakePopupWindow.OnContentChanged(Object oldContent, Object newContent) 
........

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Konstantina
Telerik team
answered on 01 Apr 2010, 03:55 PM
Hi Alan,

Thank you for contacting us.

We were able to reproduce the issue. We will do our best to fix this issue for the upcoming service pack.
Your Telerik points have been updated for your involvement.

If you have any other questions please feel free to contact us again.

Kind regards,
Konstantina
the Telerik team

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David Bass
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answered on 27 Apr 2010, 05:05 PM
We just upgraded to 2010.1.422.35 and experienced this error, so I assume it hasn't been fixed up to this release. Will there be a 2010 Q1 SP1? Or should we expect the fix in 2010 Q2?

Thanks,

David
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Miroslav Nedyalkov
Telerik team
answered on 30 Apr 2010, 12:08 PM
Hello David,

This issue is not fixed yet.

Greetings,
Miroslav Nedyalkov
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John Rippington
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answered on 05 May 2010, 10:49 PM
Hello,

Any news on when this issue might be fixed (or any workarounds?)

Regards,
John

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Miroslav Nedyalkov
Telerik team
answered on 11 May 2010, 01:18 PM
Hello John,

 The issue is fixed and the fix will be included in the next internal build.

Best wishes,
Miroslav Nedyalkov
the Telerik team

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Docking
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Alan Adorjan
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Answers by
Konstantina
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David Bass
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Miroslav Nedyalkov
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John Rippington
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