WPF。列表框项目样式

Question

我的 ListBox 项样式有问题，我创建了两种样式，但不知道如何一起使用。第一种样式用于 ListBox 项目大小、鼠标悬停颜色等，第二种样式用于项目背景（交替计数）。如果我离开其中一个，它们可以正常工作，但是如何使它们协同工作？或者也许我可以用一种风格来写？

我的代码是：

..... <Style x:Key="Style2"
       TargetType="{x:Type ListBoxItem}">
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListBoxItem">
                    <Border 
                        Name="Border"
                        Padding="7"
                        SnapsToDevicePixels="True">
                        <ContentPresenter />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsSelected" Value="true">
                            <Setter TargetName="Border" Property="Background"
                                    Value="{StaticResource SelectedBackgroundBrush}"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground"
                                    Value="{StaticResource DisabledForegroundBrush}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="ItemsControl.AlternationIndex" Value="0">
                <Setter Property="Background" Value="#FFFFFF"></Setter>
            </Trigger>
            <Trigger Property="ItemsControl.AlternationIndex" Value="1">
                <Setter Property="Background" Value="#F7F7F7"></Setter>
            </Trigger>
        </Style.Triggers>
    </Style>

    <Style  x:Key="{x:Type ListBoxItem}"
        TargetType="{x:Type ListBoxItem}"
        BasedOn="{StaticResource Style2}">
        <Style.Triggers>
            <Trigger Property="ItemsControl.AlternationIndex" Value="0">
                <Setter Property="Background" Value="#19f39611"></Setter>
            </Trigger>
            <Trigger Property="ItemsControl.AlternationIndex" Value="1">
                <Setter Property="Background" Value="#19000000"></Setter>
            </Trigger>
        </Style.Triggers>
    </Style>
</Window.Resources>


<Grid >
    <ScrollViewer Margin="30,98,362,30">
        <ListBox x:Name="lbPersonList" AlternationCount="2">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Name}"/>
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </ScrollViewer>
</Grid>

Answer 1

您可以使用支持算法FMP

<Style x:Key="Style1" TargetType="ListBoxItem">
    ...
</Style>

<Style x:Key="{x:Type ListBoxItem}" TargetType="ListBoxItem" BasedOn={StaticResource Style1}>
    ...
</Style>

已编辑

问题是 ControlTemplate 的背景设置器。这是解决方案（使用 AlternationConverter 而不是触发器）：

<Window.Resources>
    <AlternationConverter x:Key="BackgroundConverter">
        <SolidColorBrush Color="#19f39611" />
        <SolidColorBrush Color="#19000000" />
    </AlternationConverter>

    <Style x:Key="Style2" TargetType="{x:Type ListBoxItem}">
        <Setter Property="SnapsToDevicePixels" Value="true"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="ListBoxItem">
                    <Border Name="Border" Padding="7" SnapsToDevicePixels="True" Background="{TemplateBinding Background}">
                        <ContentPresenter />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsSelected" Value="true">
                            <Setter TargetName="Border" Property="Background" Value="Gray"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="Green"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="Style1" TargetType="{x:Type ListBoxItem}" BasedOn="{StaticResource Style2}">
        <Setter Property="Background" Value="{Binding RelativeSource={RelativeSource Self},
                 Path=(ItemsControl.AlternationIndex),
                 Converter={StaticResource BackgroundConverter}}"/>
    </Style>
</Window.Resources>

<ListBox x:Name="lbPersonList" AlternationCount="2" ItemContainerStyle="{StaticResource Style1}">
...