c# - 如何在 WPF 中更改滑块的选择颜色

Question

我有一个slider. 有没有办法将选择区域的蓝色更改为另一种颜色（例如黑色）

Answer 1

覆盖系统颜色不适用于自定义模板。

将“IsSelectionRangeEnabled”设置为 true，将“SelectionStart”设置为您的起始值，将“SelectionEnd”设置为您的结束值。如果您希望它是自动的，您可以将“SelectionEnd”绑定到“Value”......

<Style x:Key="SliderStyle" TargetType="{x:Type Slider}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Slider}">
                <Grid VerticalAlignment="Center">
                    <Border x:Name="borderBackground" Margin="6,0" Height="4" Background="Gray" />
                    <Canvas Margin="0,-4,0,0" VerticalAlignment="Center">
                        <Border x:Name="PART_SelectionRange" HorizontalAlignment="Left" Height="4" Background="{TemplateBinding Foreground}" />
                    </Canvas>
                    <Track x:Name="PART_Track">
                        <Track.Thumb>
                            <Thumb Width="10" Height="20" />
                        </Track.Thumb>
                    </Track>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
    <Setter Property="IsSelectionRangeEnabled" Value="True" />
    <Setter Property="SelectionStart" Value="{Binding Minimum, RelativeSource={RelativeSource Self}}" />
    <Setter Property="SelectionEnd" Value="{Binding Value, RelativeSource={RelativeSource Self}}" />
    <Setter Property="Foreground" Value="Red" />
</Style>

Answer 2

您可以覆盖默认值SystemColors以更改选择区域的颜色。

    <Slider  Margin="0,10,0,0" Width="287" Value="6" IsSelectionRangeEnabled="True"  SelectionEnd="6" >
        <Slider.Resources>
            <SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Black" />
            <SolidColorBrush x:Key="{x:Static SystemColors.ControlDarkDarkBrushKey}" Color="Silver" />
        </Slider.Resources>
    </Slider>

结果：