Artemis/src/Artemis.UI/Screens/ProfileEditor/Panels/Properties/Dialogs/TimelineSegmentEditView.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:controls="clr-namespace:FluentAvalonia.UI.Controls;assembly=FluentAvalonia"
             xmlns:dialogs="clr-namespace:Artemis.UI.Screens.ProfileEditor.Properties.Dialogs"
             xmlns:attachedProperties="clr-namespace:Artemis.UI.Shared.AttachedProperties;assembly=Artemis.UI.Shared"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="Artemis.UI.Screens.ProfileEditor.Properties.Dialogs.TimelineSegmentEditView"
             x:DataType="dialogs:TimelineSegmentEditViewModel">
    <StackPanel>
        <controls:NumberBox Name="LengthNumberBox" 
                            Minimum="0.1" 
                            Value="{CompiledBinding SegmentLength}"
                            HorizontalAlignment="Stretch" 
                            attachedProperties:NumberBoxAssist.SuffixText="sec"/>    
    </StackPanel>
</UserControl>