WPF Disabled button's background

Can I do it without overriding button's template only with styles?

I think not, because the Controls in the Windows has a default Styles and ControlTemplates and in each version of Windows they are different. In addition, the styles - it's just a lot of settings, usually the style does not change/add behavior to control, which is responsible for this ControlTemplate.

Note: the Style it is a set of setters, for example: set the background, size, etc. The ControlTemplate is the form, in which all of these settings will appear.

In this situation, I recommend you all to change the ControlTemplate, where it is possible to have the same behavior aka view, regardless of the version of the system.

In this case, try this Style:

<Window.Resources>
    <Style TargetType="Button" x:Key="MyButton2">
        <Setter Property="OverridesDefaultStyle" Value="True" />
        <Setter Property="Background" Value="MediumAquamarine" />
        <Setter Property="Foreground" Value="MediumBlue" />

        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Button}">
                    <Grid Background="{TemplateBinding Background}">
                        <ContentPresenter x:Name="MyContentPresenter" 
                                          Content="{TemplateBinding Content}"
                                          HorizontalAlignment="Center" 
                                          VerticalAlignment="Center" />
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>

        <Style.Triggers>
            <Trigger Property="IsEnabled" Value="False">
                <Setter Property="Background" Value="Green"/>
                <Setter Property="Foreground" Value="DeepPink"/>
            </Trigger>
        </Style.Triggers>
    </Style>
</Window.Resources>

<Grid x:Name="LayoutRoot">
    <Button Content="Button" 
            IsEnabled="False"
            HorizontalAlignment="Left" 
            VerticalAlignment="Top" 
            Width="75" 
            Style="{StaticResource MyButton2}"
            Click="Button_Click"/>
</Grid>

The odd thing is that it "works" when i run it, well partly, and this is likely to the template of the button actually. Here is a buttons entire template.

<Style x:Key="FocusVisual">
    <Setter Property="Control.Template">
        <Setter.Value>
            <ControlTemplate>
                <Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<SolidColorBrush x:Key="Button.Static.Background" Color="#FFDDDDDD"/>
<SolidColorBrush x:Key="Button.Static.Border" Color="#FF707070"/>
<SolidColorBrush x:Key="Button.MouseOver.Background" Color="#FFBEE6FD"/>
<SolidColorBrush x:Key="Button.MouseOver.Border" Color="#FF3C7FB1"/>
<SolidColorBrush x:Key="Button.Pressed.Background" Color="#FFC4E5F6"/>
<SolidColorBrush x:Key="Button.Pressed.Border" Color="#FF2C628B"/>
<SolidColorBrush x:Key="Button.Disabled.Background" Color="#FFF4F4F4"/>
<SolidColorBrush x:Key="Button.Disabled.Border" Color="#FFADB2B5"/>
<SolidColorBrush x:Key="Button.Disabled.Foreground" Color="#FF838383"/>
<Style x:Key="ButtonStyle1" TargetType="{x:Type Button}">
    <Setter Property="FocusVisualStyle" Value="{StaticResource FocusVisual}"/>
    <Setter Property="Background" Value="{StaticResource Button.Static.Background}"/>
    <Setter Property="BorderBrush" Value="{StaticResource Button.Static.Border}"/>
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="HorizontalContentAlignment" Value="Center"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="Padding" Value="1"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
                    <ContentPresenter x:Name="contentPresenter" Focusable="False" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsDefaulted" Value="true">
                        <Setter Property="BorderBrush" TargetName="border" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/>
                    </Trigger>
                    <Trigger Property="IsMouseOver" Value="true">
                        <Setter Property="Background" TargetName="border" Value="{StaticResource Button.MouseOver.Background}"/>
                        <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.MouseOver.Border}"/>
                    </Trigger>
                    <Trigger Property="IsPressed" Value="true">
                        <Setter Property="Background" TargetName="border" Value="{StaticResource Button.Pressed.Background}"/>
                        <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.Pressed.Border}"/>
                    </Trigger>
                    <Trigger Property="IsEnabled" Value="false">
                        <Setter Property="Background" TargetName="border" Value="{StaticResource Button.Disabled.Background}"/>
                        <Setter Property="BorderBrush" TargetName="border" Value="{StaticResource Button.Disabled.Border}"/>
                        <Setter Property="TextElement.Foreground" TargetName="contentPresenter" Value="{StaticResource Button.Disabled.Foreground}"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

As you can see there is alot of things going on in the control template of the button. In example the following SolidColorBrushes are used when the ctl is disabled.

<SolidColorBrush x:Key="Button.Disabled.Background" Color="#FFF4F4F4"/>
<SolidColorBrush x:Key="Button.Disabled.Border" Color="#FFADB2B5"/>
<SolidColorBrush x:Key="Button.Disabled.Foreground" Color="#FF838383"/>

You can either change these (in scope of your usercontrol, app), or you can rewrite the control template as Suggested by Daniel Ward.

You may dump the default template of any control by right clicking it in the UI Editor, Edit Template -> Create a copy... Through blend, code or disassembling :)

Hope it helps!

Cheers

Stian

My solution is a bit easier but it does not allow to use a Transparent background color for a disabled button and you cannot change the BorderBrush either. What I do is using a TextBlock as a content of the button and change the color of this TextBlock background when it's disabled.

My button is written like this:

<Button>
    <TextBlock Text="Click me!" Style="{StaticResource MyButtonContentStyle}" />
</Button>

And MyButtonContentStyle is written like this:

<Style x:Key="MyButtonContentStyle" TargetType="TextBlock">
    <Style.Triggers>
        <Trigger Property="IsEnabled" Value="False">
            <Setter Property="Background" Value="White" />
        </Trigger>
    </Style.Triggers>
</Style>

It worked like a charm for us.