Windows Phone 7中的可滚动文本块

Question

我正在尝试创建一个可滚动的文本块.但它似乎没有用.我应该怎么做呢？以下是我的代码:

    <Grid x:Name="ContentGrid" Grid.Row="1">
        <ScrollViewer>
        <TextBlock Height="517" HorizontalAlignment="Left" Margin="33,16,0,0" Name="textBlockRules" Text="" VerticalAlignment="Top" Width="414" FontSize="25" TextWrapping="Wrap" /></ScrollViewer>   

Answer 1

将scrollviewerHorizo​​ntalBar设置为visibal，使textbok拉伸并确保文本足够长，如下所示：

    <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" Name="Scroller">
        <TextBlock HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MinWidth="100" Width="{Binding ElementName=Scroller, Path=ViewportWidth}"
        TextWrapping="Wrap" Text="Some really long text that should probably wordwrap when you resize the window." />
</ScrollViewer>