WPF ListBoxItem wqith ControlTemplate

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.NET

XAML

WPF

Hi,

in .NET 4.0 the selected item change only the height, not the background.
In .NET 3.0 it's work... how this work in 4.0 too?

<Style x:Key="GlowContainer" TargetType="{x:Type ListBoxItem}">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ListBoxItem}">
                        <Border removed="WhiteSmoke"
                                    CornerRadius="5"
                                    BorderThickness="2"
                                    x:Name="ItemBorder"
                                    Margin="6,3,6,3" >
                            <ContentPresenter />
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter Property="Height" Value="100" />
                                <Setter TargetName="ItemBorder" 
                                            Property="Background" Value="Green" />
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>