Semi.Avalonia/src/Semi.Avalonia.Demo/Pages/ButtonDemo.axaml

<UserControl
    x:Class="Semi.Avalonia.Demo.Pages.ButtonDemo" 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" d:DesignHeight="450" d:DesignWidth="800" mc:Ignorable="d">
    <StackPanel Margin="20" HorizontalAlignment="Left" Spacing="20">
        <TextBlock>Light (Default)</TextBlock>
        <StackPanel Orientation="Horizontal" Spacing="20">
            <Button Classes="Primary">Primary</Button>
            <Button Classes="Secondary">Secondary</Button>
            <Button Classes="Tertiary">Tertiary</Button>
            <Button Classes="Warning">Warning</Button>
            <Button Classes="Danger">Danger</Button>
            <Button Classes="Primary" IsEnabled="False">Danger</Button>
        </StackPanel>
        <TextBlock>Solid</TextBlock>
        <StackPanel Orientation="Horizontal" Spacing="20">
            <Button Classes="Primary" Theme="{DynamicResource SolidButton}">Primary</Button>
            <Button Classes="Secondary" Theme="{DynamicResource SolidButton}">Secondary</Button>
            <Button Classes="Tertiary" Theme="{DynamicResource SolidButton}">Tertiary</Button>
            <Button Classes="Warning" Theme="{DynamicResource SolidButton}">Warning</Button>
            <Button Classes="Danger" Theme="{DynamicResource SolidButton}">Danger</Button>
            <Button Classes="Primary" IsEnabled="False" Theme="{DynamicResource SolidButton}">Danger</Button>
        </StackPanel>
        <TextBlock>Borderless</TextBlock>
        <StackPanel Orientation="Horizontal" Spacing="20">
            <Button Classes="Primary" Theme="{DynamicResource BorderlessButton}">Primary</Button>
            <Button Classes="Secondary" Theme="{DynamicResource BorderlessButton}">Secondary</Button>
            <Button Classes="Tertiary" Theme="{DynamicResource BorderlessButton}">Tertiary</Button>
            <Button Classes="Warning" Theme="{DynamicResource BorderlessButton}">Warning</Button>
            <Button Classes="Danger" Theme="{DynamicResource BorderlessButton}">Danger</Button>
            <Button Classes="Primary" IsEnabled="False" Theme="{DynamicResource BorderlessButton}">Danger</Button>
        </StackPanel>
    </StackPanel>
</UserControl>