WPF制作带小箭头的按钮完整代码

<ControlTemplate x:Key="btnTpl" TargetType="RadioButton">
 <StackPanel Orientation="Vertical" Height="30" Background="Transparent">
 <Border Name="border" Background="#006AB8" Height="25">
  <ContentPresenter Name="contentPre" VerticalAlignment="Center" HorizontalAlignment="Center" TextElement.Foreground="#FFF" TextElement.FontSize="12" Margin="0"/>
 </Border>
 <Path x:Name="path" HorizontalAlignment="Center" VerticalAlignment="Center" Data="M 0 0 L 6 4 L 12 0 Z">
  <Path.Fill>
  <SolidColorBrush Color="#006AB8" />
  </Path.Fill>
 </Path>
 </StackPanel>
 <ControlTemplate.Triggers>
 <Trigger Property="IsMouseOver" Value="True">
  <Setter TargetName="border" Property="Margin" Value="2 2 2 0"></Setter>
  <Setter TargetName="border" Property="Height" Value="23"></Setter>
  <Setter Property="TextElement.FontSize" Value="11"></Setter>
 </Trigger>
 <Trigger Property="IsChecked" Value="true">
  <Setter TargetName="border" Property="Border.Background" Value="#15BDF7"></Setter>
  <Setter TargetName="path" Property="Fill" >
  <Setter.Value>
   <SolidColorBrush Color="#15BDF7" />
  </Setter.Value>
  </Setter>
 </Trigger>
 </ControlTemplate.Triggers>
</ControlTemplate>