RadListBox选择边框颜色WPF

Question

我正在使用带有telerik控件的WPF应用程序。

我正在使用RadListBox ，它根据记录数在运行时生成。 因此，如果我的集合中有10条记录，则10 RadListBox将显示在应用程序中。 当我选择每个RadListBox时，附近面板中将显示RadListBox的详细视图。 一次只能选择一个RadListBox 。

当我现在选择RadListBox时，它显示灰色的背景，这是不可见的，并且用户不确定在10个之中选择了哪个。

现在，我需要为选定的RadListBox设置边框。 因此，每当用户选择RadListBox ，选定的ListBox边框应为红色。

无论如何，我可以访问Selected RadListBox及其Border属性吗？

.XAML代码：

 <telerik:RadListBox Grid.Column="0" Grid.Row="0" Margin="0,25,0,0" BorderThickness="1" BorderBrush="#FFCBD8E8"  ItemsSource="{Binding MCollection, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, NotifyOnSourceUpdated=True, ValidatesOnDataErrors=True}" ItemTemplate="{StaticResource ImageDataTemplate}" ItemContainerStyle="{StaticResource DraggableListBoxItem}" DragEnter="lseries_DragEnter" DragLeave="ls_DragLeave" Style="{StaticResource myListboxStyle}" SelectedItem="{Binding SSeries, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" telerik:StyleManager.Theme="Windows8" PreviewKeyDown="RadListBox_PreviewKeyDown" MouseDoubleClick="l_MouseDoubleClick" PreviewMouseDown="RadListBox_PreviewMouseLeftButtonDown" SelectionChanged="Mt_SelectionChanged">
</telerik:RadListBox>

图像数据模板：

<DataTemplate  x:Key="ImageDataTemplate">
            <Border BorderThickness="2" BorderBrush="#FF21A2DE" CornerRadius="2" VerticalAlignment="Top">
                <Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="*" />
                        <RowDefinition Height="20" />
                        <RowDefinition Height="100" />
                    </Grid.RowDefinitions>
                    <TextBlock x:Name="SeriesNo" Grid.Column="0"  Grid.Row="0" HorizontalAlignment="Center">
                        <TextBlock.Style>
                            <Style TargetType="{x:Type TextBlock}">
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding Path=Istre, Mode=TwoWay, Source={StaticResource MViewModel}}" Value="False">
                                        <Setter  Property="Text" Value="{Binding SNumber}"  />
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding Path=Istre, Mode=TwoWay, Source={StaticResource MViewModel}}" Value="True">
                                        <Setter  Property="Visibility" Value="Collapsed" />
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </TextBlock.Style>
                    </TextBlock>
                    <TextBlock Grid.Column="0" Grid.Row="1" HorizontalAlignment="Center">
                        <TextBlock.Style>
                            <Style TargetType="{x:Type TextBlock}">
                                <Style.Triggers>
                                    <DataTrigger Binding="{Binding Path=Istre, Mode=TwoWay, Source={StaticResource MViewModel}}" Value="False">
                                        <Setter  Property="Text" Value="{Binding RDNumber}"  />
                                    </DataTrigger>
                                    <DataTrigger Binding="{Binding Path=Istre, Mode=TwoWay, Source={StaticResource MViewModel}}" Value="True">
                                        <Setter  Property="Text" Value="{Binding SeriesNumber}" />
                                    </DataTrigger>
                                </Style.Triggers>
                            </Style>
                        </TextBlock.Style>
                    </TextBlock>
                    <Image x:Name="viewImage" Grid.Row="2" Stretch="Uniform"  Height="100" Width="135" Source="{Binding DisplayImage, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, NotifyOnSourceUpdated=True, ValidatesOnDataErrors=True}" Visibility="Visible" />
                    <TextBlock x:Name="viewText" Grid.Row="2" VerticalAlignment="Center" Height="100" HorizontalAlignment="Center" />
                </Grid>
            </Border>
        </DataTemplate>

RadListBox列表的图像：

Answer 1

您在ImageDataTemplate中需要以下内容：

<Border.Style>
    <Style TargetType="Border">
        <Style.Triggers>
            <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={RelativeSource AncestorType=telerik:RadListBoxItem, AncestorLevel=1}}" Value="True">
                <Setter Property="BorderBrush" Value="Red"/>
            </DataTrigger>
        </Style.Triggers>
        <Setter Property="BorderBrush" Value="#FF21A2DE"/>
    </Style>
</Border.Style>

不要忘记从Border创建行中删除BorderBrush setter。