Avalonia/samples/ControlCatalog/Pages/SliderPage.xaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:sys="clr-namespace:System;assembly=netstandard"
             x:Class="ControlCatalog.Pages.SliderPage">
  <StackPanel Orientation="Vertical" Spacing="4">
    <TextBlock Classes="h2">A control that lets the user select from a range of values by moving a Thumb control along a Track.</TextBlock>

    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="0 16 0 0" Spacing="16">
      <StackPanel Orientation="Vertical"
                  HorizontalAlignment="Center">
        <Slider Value="0"
                Minimum="0"
                Maximum="100"
                TickFrequency="10"
                Width="300" />
        <Slider Name="CustomTickedSlider"
                Value="0"
                Minimum="0"
                Maximum="100"
                TickPlacement="BottomRight"
                IsSnapToTickEnabled="True"
                Ticks="0,20,25,40,75,100"
                Width="300" />
        <Slider Name="SliderWithTooltip"
                Value="0"
                Minimum="0"
                Maximum="100"
                Width="300">
          <Slider.Styles>
            <Style Selector="Slider /template/ Thumb">
              <Setter Property="ToolTip.Tip" Value="{Binding $parent[Slider].Value, Mode=OneWay, StringFormat='Value \{0:f\}'}" />
              <Setter Property="ToolTip.Placement" Value="Top" />
              <Setter Property="ToolTip.VerticalOffset" Value="-10" />
              <Setter Property="ToolTip.HorizontalOffset" Value="-30" />
            </Style>
          </Slider.Styles>
        </Slider>
        <Slider Value="0"
                Minimum="0"
                Maximum="100"
                TickFrequency="10"
                Width="300">
          <DataValidationErrors.Error>
            <sys:Exception /> 
          </DataValidationErrors.Error>
        </Slider>
        <Slider Value="0"
                IsDirectionReversed="True"
                Minimum="0"
                Maximum="100"
                TickFrequency="10"
                Width="300" />
      </StackPanel>
      <Slider Value="0"
              Minimum="0"
              Maximum="100"
              Orientation="Vertical"
              IsSnapToTickEnabled="True"
              TickPlacement="Outside"
              TickFrequency="10"
              Height="300"/>
      <Slider Value="0"
              IsDirectionReversed="True"
              Minimum="0"
              Maximum="100"
              Orientation="Vertical"
              IsSnapToTickEnabled="True"
              TickPlacement="Outside"
              TickFrequency="10"
              Height="300"/>
    </StackPanel>

  </StackPanel>
</UserControl>