xmal文件中,写入对应转义符可以实现对应功能
如:
<Border CornerRadius="8" Background="{DynamicResource RechargeEnterSelectBackBrush}" Height="120">
<TextBlock Text="上下键切换券 F1选中或取消用券" TextWrapping="Wrap" Foreground="White" FontSize="28" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="20"/>
</Border>