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Editorial Team
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Asked: 2026-05-22T15:58:51+00:00

I’d like to display the same instance of user control twice. Ive tried doing

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I’d like to display the same instance of user control twice. Ive tried doing the following:

<UserControl.Resources>
    <Views:MyControl View x:Key="_uc1" MinHeight="300"/>
</UserControl.Resources>

And trying to use it in a TabControl:

<TabControl Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="3" >
    <TabItem >
        <TabItem.Header>
            <TextBlock Text="Header1" FontWeight="13"/>
        </TabItem.Header>

        <StackPanel  >
            <ContentControl Content="{StaticResource _uc1}"/>
        </StackPanel>
    </TabItem>
    <TabItem >
        <TabItem.Header>
            <TextBlock Text="Header2" FontWeight="13"/>
        </TabItem.Header>

        <StackPanel MinHeight="600" >
            <ContentControl Content="{StaticResource _uc1}"/>
        </StackPanel>
    </TabItem>
</TabControl>

Im getting the error message:
“{“Specified element is already the logical child of another element. Disconnect it first.”}”

Is what Im trying to achieve possible?

Thanks,

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1 Answer

  1. Editorial Team

    It’s not. As the error indicates, a given object may only be present in a given logical tree once. This helps to ensure that the logical tree remains a tree.

    If you’re using the MVVM pattern (or are just using DataBinding in general,) then you can bind two different UserControls to the same backing ViewModel/data, so that the controls will behave the same and operate on the same state representation. You’ll still need two different controls, though.

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