Right-To-Left ToolBar

Main.xaml

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
  <ToolBar FlowDirection="RightToLeft" Height="50" DockPanel.Dock="Top">
    <ToolBar.Background>
      <LinearGradientBrush StartPoint="0,0.5" EndPoint="1,1">
        <LinearGradientBrush.GradientStops>
          <GradientStop Color="DarkRed" Offset="0" />
          <GradientStop Color="DarkBlue" Offset="0.3" />
          <GradientStop Color="LightBlue" Offset="0.6" />
          <GradientStop Color="White" Offset="1" />
        </LinearGradientBrush.GradientStops>
      </LinearGradientBrush>
    </ToolBar.Background>

    <Button FontSize="12" Foreground="White" Margin="10">Button1</Button>
    <Button FontSize="12" Foreground="White" Margin="10">Button2</Button>
    <Button FontSize="12" Foreground="White" Margin="10">Button3</Button>
    <Button FontSize="12" Foreground="White" Margin="10">Button4</Button>
  </ToolBar>
</Page>