【再学WPF】模板

    <!--设置所有的按钮样式-->
    <Style TargetType="Button">
        <Setter Property="Margin" Value="0 10 0 0"/>
        
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="Button">
                    <Border x:Name="bg" Background="#77FFFFFF" BorderBrush="Black" BorderThickness="1" CornerRadius="5">
                        <Grid>
                            <ContentPresenter x:Name="_Content1" 
                                  VerticalAlignment="Center" 
                                  HorizontalAlignment="Center"/>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Opacity" Value="0.8"/>
                            <Setter TargetName="_Content1" Property="Content" Value="*"/>
                        </Trigger>
                        <Trigger Property="IsPressed" Value="True">
                            <Setter Property="Opacity" Value="0.6"/>
                            <!--针对具体控件设置TargetName，设置bg的背景颜色为红色-->
                            <Setter TargetName="bg" Property="Background"  Value="Red"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>

            </Setter.Value>
        </Setter>
        
    </Style>