TextBlock DataTrigger中的连接文本

<TextBlock>
    <TextBlock.Style>
        <Style TargetType="TextBlock">
            <Setter Property="Text" Value="默认文本" />
            <Style.Triggers>
                <DataTrigger Binding="{Binding IsConnected}" Value="True">
                    <Setter Property="Text" Value="已连接" />
                </DataTrigger>
                <DataTrigger Binding="{Binding IsConnected}" Value="False">
                    <Setter Property="Text" Value="未连接" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </TextBlock.Style>
</TextBlock>