How to remove style for selected item in ListBox WPF

Question

In ListBox, selected item will be highlighed with blue color.

I don't want to highlight selected item in ListBox.

I am using below style:

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

But it does not over-write windows style.

Please suggest.

Answer 1

You need to override template of ListBoxItem and change Background color to transparent in the trigger:

<Style x:Key="myLBStyle" TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource {x:Type ListBoxItem}}" >
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ListBoxItem}">
                    <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="True">
                        <ContentPresenter ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="IsMouseOver" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="Bd" Value="#1F26A0DA"/>
                            <Setter Property="BorderBrush" TargetName="Bd" Value="#A826A0DA"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="Selector.IsSelectionActive" Value="False"/>
                                <Condition Property="IsSelected" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="Bd" Value="#3DDADADA"/>
                            <Setter Property="BorderBrush" TargetName="Bd" Value="#FFDADADA"/>
                        </MultiTrigger>
                        <MultiTrigger>
                            <MultiTrigger.Conditions>
                                <Condition Property="Selector.IsSelectionActive" Value="True"/>
                                <Condition Property="IsSelected" Value="True"/>
                            </MultiTrigger.Conditions>
                            <Setter Property="Background" TargetName="Bd" Value="Transparent"/>
                            <Setter Property="BorderBrush" TargetName="Bd" Value="#FF26A0DA"/>
                        </MultiTrigger>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="TextElement.Foreground" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

<ListBox ItemContainerStyle="{StaticResource myLBStyle}">