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POChange DockPanel's background to match the disabled ListView's background color
 

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  1. POChange DockPanel's background to match the disabled ListView's background color
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    <p>I have a ListView inside a DockPanel. I need the ListView to be stretched horizontally and centered vertically inside the DockPanel. When the ListView is disabled (IsEnabled=false) I need to change the DockPanel's background to match the disabled ListView's background color. </p> <p>So, basically I want to avoid the situation that can be seen on the picture below.</p> <p><img src="https://i.stack.imgur.com/uiR3b.png" alt="enter image description here"></p> <pre><code>&lt;Window&gt; &lt;DockPanel IsEnabled="False"&gt; &lt;ListView IsEnabled="False" VerticalAlignment="Center" HorizontalContentAlignment="Center"&gt; &lt;ListViewItem Content="AAA"/&gt; &lt;ListViewItem Content="BBB"/&gt; &lt;ListViewItem Content="CCC"/&gt; &lt;/ListView&gt; &lt;/DockPanel&gt; &lt;/Window&gt; </code></pre> <p>However, I don't want to explicitly declare colors anywhere in my code, because I don't know what kind of background color will a ListView use in different Windows environments (I'm not sure, but I guess different Windows theme/color settings can alter the default background color of the ListView - which potentially could be different from the color that I don't want to explicitly declare).</p> <p>Binding the ListView's background color to the DockPanel's background color doesn't work.</p> <p>So, right now I'm using the following workaround.</p> <pre><code>&lt;DockPanel.Style&gt; &lt;Style TargetType="{x:Type DockPanel}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding ElementName=parametersListView, Path=IsEnabled}" Value="False"&gt; &lt;Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/DockPanel.Style&gt; </code></pre> <p>I've extracted the resource key that my ListView's using in its ControlTemplate. On the template there is a Trigger declared on the IsEnabled property and it sets the control's background color to the color represented by the SystemColors.ControlBrushKey key.</p> <p>This seems to work, but I'm not sure if this is the right way to do this.</p> <p>Is there a way to do this in a more <em>robust</em> fashion, or this is the best that I could do?</p> <p>(On a side note: using SystemColors.ControlBrush instead of SystemColors.ControlBrushKey produces a different shade of grey, I'm not sure why.)</p>
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    1. USKohányi Róbert
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    1. COI think you're setting the DockPanel's BG color correctly. If you try to set the DockPanel to the BG color of the ListView, even if using a DataTrigger, the value will be the default BG color, not the disabled value. Here's another similar SO question that may help: [Change background color of disabled listbox in windows classic theme](http://stackoverflow.com/q/2594714/9664)
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      1. POChange DockPanel's background to match the disabled ListView's background color
      1. USMetro Smurf
 

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