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Editorial Team
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Asked: 2026-06-10T19:51:58+00:00

I have a button style where I have some Path seth in Content property.

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I have a button style where I have some Path seth in Content property. That is working fine until I display a second instance of this button. I am getting an exception

Specified element is already the logical child of another element. Disconnect it first.

Other posts like this:

Error "Specified element is already the logical child of another element"?

led me to a solution that I need to transfer Content to ContentTemplate.

<Viewbox>
    <Grid Margin="0,0,30,30">
        <Path Fill="#FFFFFFFF">
            <Path.Data>
                <PathGeometry Figures="m 13.123027 65.796864 0 81.448876 133.750213 0 0 -133.778725 -67.192062 0 z" FillRule="NonZero"/>
            </Path.Data>
        </Path>
        <Path Fill="{StaticResource DataCRUDIconBrush}">
            <Path.Data>
                <PathGeometry Figures="M 79.624708 0.36218262 0 62.950511 l 0 97.411669 160 0 0 -159.99999738 -80.375292 0 z m 2.28303 16.89635038 61.172792 0 0 126.207297 -126.161061 0 0 -76.829978 0.187646 -0.156158 64.800623 0 0 -49.221161 z" FillRule="NonZero"/>
            </Path.Data>
        </Path>
        <Path Fill="#FFFFFFFF">
            <Path.Data>
                <PathGeometry Figures="m 13.123027 65.796864 0 81.448876 133.750213 0 0 -133.778725 -67.192062 0 z" FillRule="NonZero"/>
            </Path.Data>
            <Path.RenderTransform>
                <TranslateTransform X="30" Y="30"/>
            </Path.RenderTransform>
        </Path>
        <Path Fill="{StaticResource DataCRUDIconBrush}">
            <Path.Data>
                <PathGeometry Figures="M 79.624708 0.36218262 0 62.950511 l 0 97.411669 160 0 0 -159.99999738 -80.375292 0 z m 2.28303 16.89635038 61.172792 0 0 126.207297 -126.161061 0 0 -76.829978 0.187646 -0.156158 64.800623 0 0 -49.221161 z" FillRule="NonZero"/>
            </Path.Data>
            <Path.RenderTransform>
                <TranslateTransform X="30" Y="30"/>
            </Path.RenderTransform>
        </Path>
    </Grid>
</Viewbox>

How can I translate this code to fit the ContentTemplate, without loosing the triggers I hava there?

<Setter.Value>
    <ControlTemplate TargetType="Button">
    ....
        <ContentPresenter x:Name="Content" Opacity="0.5" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" />
    </ControlTemplate>
</Setter.Value>
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1 Answer

  1. Editorial Team

    I know your problem. You are using data binding for the ContentPresenter.Content property.
    And in this case, you need to be sure, that your binding object is not a visual element. It is very important. Disconnection from logical tree is not a good solution (just ‘bottle-necks’, another words).
    Content can contains only non-visual objects. All visual parts of your control should be in its ContentPresenter.ContentTemplate property and no another way.

    Thus I think all your code with graphics should be placed in the ContentTemplate property. If you have troubles with it, please, share your entire sample and I try to help you, as much i can.

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