Disabling Listbox is not changing background color in style

Question

I have this simple style that does not change the ListBox Background when the ListBox is disabled:

<Style TargetType="ListBox" >                    
    <Style.Triggers>
        <Trigger Property="IsEnabled" Value="True">
            <Setter Property="Background" Value="Red"/>
        </Trigger>
        <Trigger Property="IsEnabled" Value="False">
            <Setter Property="Background" Value="Orange"/>
        </Trigger>
    </Style.Triggers>
</Style>

Snoop does not help me on this one and I cannot figure a simple way without overriding templates. Anyone have a simple way to get this working? TIA.

ListBox colors strange. This post may lead you to and answer. http://stackoverflow.com/questions/7298282/wpf-listbox-selected-item-background — paparazzo, Jan 31 '12 at 18:53
@H.B. - I still don't understand your comment. The trigger WORKS EXCEPT the IsEnabled = False so why would he override his style. He needs to make a template — MyKuLLSKI, Jan 31 '12 at 20:07
@BalamBalam, I am not styling selected item but listbox itself. — Klaus Nji, Feb 01 '12 at 21:22
@e28Makaveli, can yo please share the working sample code in which you override the template of ListBox. Because its not working for me after I override the ListBox template. — SharpUrBrain, Mar 30 '12 at 08:09

score 2 · Accepted Answer · answered Jan 31 '12 at 17:55

2

The only way to do this is by overriding the template

answered Jan 31 '12 at 17:55

MyKuLLSKI

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Looks like the only way to go. – Klaus Nji Feb 01 '12 at 21:22
3

can yo please share the working sample code in which you override the template of ListBox. Because its not working for me after I override the ListBox template – SharpUrBrain Mar 30 '12 at 08:43

score 0 · Answer 2 · edited May 23 '17 at 10:28

You can change the background color of the listbox itself when the listbox is disabled by simply changing the colors that the built-in template is using. You can do this via style resources. Just paste the below code into your Listbox element and the background will be transparent when you disable the box.

<ListBox.Style>
    <Style TargetType="{x:Type ListBox}">
        <Style.Resources>
            <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent"/>
        </Style.Resources>
    </Style>
</ListBox.Style>

It is also very common to want to modify the background color of a single item when it's highlighted and when the box loses focus.. to change these, you can reference this post: https://stackoverflow.com/a/7298301/1721136

Disabling Listbox is not changing background color in style

2 Answers2

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