仿写的slider用户控件，发现无法用键盘的方向键来控制调整滑块

[沧海1梦]

如题，写的一个用户控件，用来实现自定义滑动条，现在其他都可以，就是不能用键盘的方向键来控制，原始的wpf自带的是可以的，不知道为什么？代码如下

        <LinearGradientBrush x:Key="SliderBackground"  StartPoint="0,0" EndPoint="0,1">
            <GradientStop Offset="0" Color="DarkGray"/>
            <GradientStop Offset="0.5" Color="DarkGray"/>
            <GradientStop Offset="1" Color="DarkGray"/>
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="SliderThumb"  StartPoint="0,0" EndPoint="0,1">
            <GradientStop Offset="0" Color="#B7C3CF"/>
            <!--<GradientStop Offset="1" Color="#dfdfdf"/>-->
        </LinearGradientBrush>
        <LinearGradientBrush x:Key="SliderText"  StartPoint="0,0" EndPoint="0,1">
            <GradientStop Offset="0" Color="#7cce45"/>
            <GradientStop Offset="1" Color="#4ea017"/>
        </LinearGradientBrush>

        <!--Slider模板-->
        <Style x:Key="Slider_RepeatButton" TargetType="RepeatButton">
            <Setter Property="Focusable" Value="false" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="RepeatButton">
                        <Border Background="{StaticResource SliderBackground}" />
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="Slider_RepeatButton1" TargetType="RepeatButton">
            <Setter Property="Focusable" Value="false" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="RepeatButton">
                        <Border Background="Transparent" />
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="Slider_Thumb" TargetType="Thumb">
            <Setter Property="Focusable" Value="false" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Thumb">
                        <Grid>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition/>
                                <ColumnDefinition/>
                            </Grid.ColumnDefinitions>
                            <Border Background="{StaticResource SliderBackground}"/>
                            <Border Grid.ColumnSpan="2" CornerRadius="4"  Background="{StaticResource SliderThumb}" Width="15">
                                <!--<TextBlock Text="||" HorizontalAlignment="Center" VerticalAlignment="Center"/>-->
                            </Border>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <Style x:Key="Slider_CustomStyle" TargetType="Slider">
            <Setter Property="Focusable" Value="false" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="Slider">
                        <Grid>
                            <!--<Grid.ColumnDefinitions>
                                <ColumnDefinition Width="80"/>
                                <ColumnDefinition/>
                                <ColumnDefinition Width="40"/>
                            </Grid.ColumnDefinitions>-->
                            <Grid.Effect>
                                <DropShadowEffect BlurRadius="10" ShadowDepth="1" />
                            </Grid.Effect>
                            <!--<Border HorizontalAlignment="Right" BorderBrush="Gray" BorderThickness="1,1,0,1" Background="{StaticResource SliderText}" Width="80" CornerRadius="8,0,0,8"/>-->
                            <!--<Border Grid.Column="2" HorizontalAlignment="Right" BorderBrush="Gray" BorderThickness="0,1,1,1" Background="{StaticResource SliderText}" Width="40" CornerRadius="0,8,8,0"/>-->
                            <!--<TextBlock Text="{Binding RelativeSource={RelativeSource TemplatedParent},Path=Tag}" Foreground="White" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="14"/>-->
                            <!--<TextBlock Grid.Column="2" Text="{Binding ElementName=PART_Track,Path=Value,StringFormat=\{0:N0\}}" Foreground="White" VerticalAlignment="Center" HorizontalAlignment="Center" FontSize="14" DataContext="{Binding}" />-->
                            <Border Grid.Column="1" BorderBrush="Gray" BorderThickness="1" CornerRadius="8,0,0,8">
                                <Track Grid.Column="1" Name="PART_Track">
                                    <Track.DecreaseRepeatButton>
                                        <RepeatButton Style="{StaticResource Slider_RepeatButton}"
                                Command="Slider.DecreaseLarge"/>
                                    </Track.DecreaseRepeatButton>
                                    <Track.IncreaseRepeatButton>
                                        <RepeatButton Style="{StaticResource Slider_RepeatButton1}"
                                Command="Slider.IncreaseLarge"/>
                                    </Track.IncreaseRepeatButton>
                                    <Track.Thumb>
                                        <Thumb Style="{StaticResource Slider_Thumb}"/>
                                    </Track.Thumb>
                                </Track>
                            </Border>
                        </Grid>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

[exception92]

既然是自定义的，就需要把按键事件绑定到控件上，具体百度查询。

[沧海1梦]

多谢版主，解决了，没有加焦点获取，Focusable="True"加了就可以使用键盘方向键了。