在.NET 4.5 WPF中更改ListBox中SelectedItem的背景颜色

问题描述：

我想更改列表框的SelectedItem的背景颜色.我尝试了以下代码:

I want to change the background color of a ListBox's SelectedItem. I tried the below code :

<ListBox Grid.Column="0" ScrollViewer.HorizontalScrollBarVisibility="Hidden" 
         ItemsSource="{Binding Parents}" DisplayMemberPath="Title"
         Height="35" FontSize="18" BorderThickness="0" Background="#FF2A2A2A" 
         Foreground="White" SelectedIndex="0">

    <ListBox.ItemsPanel>
        <ItemsPanelTemplate>
            <StackPanel IsItemsHost="True" Orientation="Horizontal"/>
        </ItemsPanelTemplate>
    </ListBox.ItemsPanel>

    <ListBox.ItemContainerStyle>
        <Style TargetType="{x:Type ListBoxItem}">
            <Style.Triggers>
                <Trigger Property="IsSelected" Value="True">
                    <Setter Property="BorderThickness" Value="0" />
                    <Setter Property="Background" Value="Transparent" />
                    <Setter Property="Foreground" Value="DodgerBlue" />
                </Trigger>
            </Style.Triggers>

            <Style.Resources>
                <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" 
                                 Color="Transparent"/>
                <SolidColorBrush x:Key="{x:Static SystemColors.InactiveSelectionHighlightBrushKey}"
                                 Color="Transparent" />
            </Style.Resources>
        </Style>
    </ListBox.ItemContainerStyle>
</ListBox>

但是我看不到SelectedItems的背景颜色有任何变化.有人可以指出以上XAML中的错误吗?

But I cannot see any change in SelectedItems's Background Color. Can anybody point the mistake in above XAML?

我也想针对特定的ListBox使用这种样式，所以我不想更改ControlTemplate.

Also I want to use this style for this specific ListBox, so I don't want to change ControlTemplate.

答

在.NET 4.5系统中，默认情况下不使用SystemColors，因此您应该:

In .NET 4.5 system does not use SystemColors by default, therefore you should:

1)创建自己的样式/控件模板；

1) create your own Style/ControlTemplate;

2)在

2) create a BlankListBoxContainer like in this example:

<Style x:Key="BlankListBoxContainerStyle" TargetType="{x:Type ListBoxItem}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ListBoxItem}">
                <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" 
                                  SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                                  VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
            </ControlTemplate>
        </Setter.Value>
    </Setter>

   <Setter Property="FocusVisualStyle" Value="{x:Null} "/>
</Style>

3)消除框架之间的差异，例如 this :

3) remove the difference between the frameworks, like this:

FrameworkCompatibilityPreferences.AreInactiveSelectionHighlightBrushKeysSupported = false;

在创建任何窗口之前，例如在InitializeComponent()之前.

before any Window are created, for example before InitializeComponent().

从 MSDN :

AreInactiveSelectionHighlightBrushKeysSupported:

获取或设置一个值，该值指示应用程序是否应将InactiveSelectionHighlightBrush和InactiveSelectionHighlightTextBrush属性用于不活动的所选项目的颜色.

Gets or sets a value that indicates whether the application should use the InactiveSelectionHighlightBrush and InactiveSelectionHighlightTextBrush properties for the colors of inactive selected items.

在.NET 4.5 WPF中更改ListBox中SelectedItem的背景颜色

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