WPF tutorial - The Slider control

http://www.wpf-tutorial.com/misc-controls/the-slider-control/

Slider의 속성 중 TickPlacement(Tick 위치) TickFrequency(Tick 빈도)

IsSnapToTickEnabled(Thumb를Tick에만 놓일 수 있는 지)를 이용하여 Slider를 꾸밀 수 있습니다.

<StackPanel VerticalAlignment="Center" Margin="10">
        <Slider Maximum="100" TickPlacement="BottomRight" TickFrequency="5" IsSnapToTickEnabled="True">
          
        </Slider>
    </StackPanel>

Slider Value

Slider 컨트롤에는 Value 속성이 존재하며, Code-behid 혹은 바인딩을 할 수도 있습니다.

<DockPanel VerticalAlignment="Center" Margin="10">
        <TextBox Text="{Binding ElementName=slValue, Path=Value, UpdateSourceTrigger=PropertyChanged}" DockPanel.Dock="Right" TextAlignment="Right" Width="40" ></TextBox>
        <Slider Maximum="255" TickPlacement="BottomRight" TickFrequency="5" IsSnapToTickEnabled="True" Name="slValue" />
    </DockPanel>

Responding to changed values

Code-behind와 연결하기 위하여 Slider에는 ValueChanged event가 있습니다.

이를 설명하기 위한, RGB값에 대한 slider 예제입니다.

<StackPanel Margin="10" VerticalAlignment="Center">
        <DockPanel VerticalAlignment="Center" Margin="10">
            <Label DockPanel.Dock="Left" FontWeight="bold">R:</Label>
            <TextBox Text="{Binding ElementName=slider_ColorR, Path=Value, UpdateSourceTrigger=PropertyChanged}" DockPanel.Dock="Right" TextAlignment="Right" Width="40"></TextBox>
            <Slider Maximum="255" TickPlacement="BottomRight" TickFrequency="5" IsSnapToTickEnabled="True" Name="slider_ColorR" ValueChanged="ColorSlider_ValueChanged"></Slider>
        </DockPanel>
        <DockPanel VerticalAlignment="Center" Margin="10">
            <Label DockPanel.Dock="Left" FontWeight="bold">G:</Label>
            <TextBox Text="{Binding ElementName=slider_ColorG, Path=Value, UpdateSourceTrigger=PropertyChanged}" DockPanel.Dock="Right" TextAlignment="Right" Width="40"></TextBox>
            <Slider Maximum="255" TickPlacement="BottomRight" TickFrequency="5" IsSnapToTickEnabled="True" Name="slider_ColorG" ValueChanged="ColorSlider_ValueChanged"></Slider>
        </DockPanel>
        <DockPanel VerticalAlignment="Center" Margin="10">
            <Label DockPanel.Dock="Left" FontWeight="bold">B:</Label>
            <TextBox Text="{Binding ElementName=slider_ColorB, Path=Value, UpdateSourceTrigger=PropertyChanged}" DockPanel.Dock="Right" TextAlignment="Right" Width="40"></TextBox>
            <Slider Maximum="255" TickPlacement="BottomRight" TickFrequency="5" IsSnapToTickEnabled="True" Name="slider_ColorB" ValueChanged="ColorSlider_ValueChanged"></Slider>
        </DockPanel>
    </StackPanel>

 private void ColorSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            Color color = Color.FromRgb((byte)slider_ColorR.Value, (byte)slider_ColorG.Value, (byte)slider_ColorB.Value);
            this.Background = new SolidColorBrush(color);
        }