[WPF] Sfondo di selezione trasparente ListBoxItem

Da incollare nel file App.xaml

<Style x:Key="ListBoxItemStyleTransparentSelect" TargetType="ListBoxItem"> <Setter Property="Foreground" Value="Black"/> <Setter Property="FontSize" Value="10"/> <Setter Property="FontFamily" Value="Arial"/> <Setter Property="Padding" Value="1"/> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> <Setter Property="VerticalContentAlignment" Value="Top"/> <Setter Property="Background" Value="Transparent"/> <Setter Property="BorderThickness" Value="0"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="ListBoxItem"> <Grid Background="{TemplateBinding Background}"> <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="CommonStates"> <VisualState x:Name="Normal"/> <VisualState x:Name="MouseOver"> <Storyboard> <DoubleAnimation Duration="0" To=".35" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="fillColor"/> </Storyboard> </VisualState> <VisualState x:Name="Disabled"> <Storyboard> <DoubleAnimation Duration="0" To=".55" Storyboard.TargetProperty="Opacity" Storyboard.TargetName="contentPresenter"/> </Storyboard> </VisualState> </VisualStateGroup> <VisualStateGroup x:Name="SelectionStates"> <VisualState x:Name="Unselected"/> <VisualState x:Name="Selected"/> </VisualStateGroup> <VisualStateGroup x:Name="FocusStates"> <VisualState x:Name="Focused"/> <VisualState x:Name="Unfocused"/> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <Rectangle x:Name="fillColor" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/> <Rectangle x:Name="fillColor2" IsHitTestVisible="False" Opacity="0" RadiusY="1" RadiusX="1"/> <ContentPresenter x:Name="contentPresenter" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}"/> <Rectangle x:Name="FocusVisualElement" RadiusY="1" RadiusX="1" StrokeThickness="1" Visibility="Collapsed"/> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>