学习WPF里的ListBox控件的Triggers

<ControlTemplate.Triggers>
                            <Trigger Property="IsSelected" Value="true"> <!-- 当Item选中时 -->
                                <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/> <!-- x:Name="Bd"的控件的背景 设置为系统颜色 -->
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/> <!-- 字体颜色 -->
                                <Setter Property="Fill" TargetName="PathSelected" Value="Red"></Setter> <!-- x:Name="PathSelected" 路径的填充颜色为红色 -->
                                <Setter Property="Visibility" TargetName="PathSelected" Value="Visible"/> <!-- x:Name="PathSelected" 显示 -->
                            </Trigger>
                            <MultiTrigger>  <!-- 此为组合条件 -->
                                <MultiTrigger.Conditions>
                                    <Condition Property="IsSelected" Value="true"/> <!-- 条件一 选中 -->
                                    <Condition Property="Selector.IsSelectionActive" Value="false"/> <!-- 条件二 我理解为失去焦点 -->
                                </MultiTrigger.Conditions>
                                
                                <Setter Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/>
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
                        
                            
                            </MultiTrigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>