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如何：以编程方式更改 TextWrapping 属性

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示例

下面的代码示例演示如何以编程方式更改 TextWrapping 属性的值。

三个 Button 元素放置在 XAML 的 StackPanel 元素内。 Button 的每个 Click 事件对应于代码中的一个事件处理程序。 单击按钮时，事件处理程序使用的名称与其将应用于 txt2 的 TextWrapping 值相同。 此外，还会更新 txt1（XAML 中未显示的 TextBlock）中的文本，以反映属性中的变化。

<StackPanel Orientation="Horizontal" Margin="0,0,0,20">
  <Button Name="btn1" Background="Silver" Width="100" Click="Wrap">Wrap</Button>
  <Button Name="btn2" Background="Silver" Width="100" Click="NoWrap">NoWrap</Button>
  <Button Name="btn4" Background="Silver" Width="100" Click="WrapWithOverflow">WrapWithOverflow</Button>
</StackPanel>

<TextBlock Name="txt2" TextWrapping="Wrap" Margin="0,0,0,20" Foreground="Black">
  Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Lorem ipsum dolor sit amet, 
  consectetuer adipiscing elit.Lorem ipsum dolor sit aet, consectetuer adipiscing elit.
  Lorem ipsum dolor sit amet, consectetuer adipiscing elit.
</TextBlock>

private void Wrap(object sender, RoutedEventArgs e)
{
    txt2.TextWrapping = System.Windows.TextWrapping.Wrap;
    txt1.Text = "The TextWrap property is currently set to Wrap.";
}
private void NoWrap(object sender, RoutedEventArgs e)
{
    txt2.TextWrapping = System.Windows.TextWrapping.NoWrap;
    txt1.Text = "The TextWrap property is currently set to NoWrap.";
}
private void WrapWithOverflow(object sender, RoutedEventArgs e)
{
    txt2.TextWrapping = System.Windows.TextWrapping.WrapWithOverflow;
    txt1.Text = "The TextWrap property is currently set to WrapWithOverflow.";
}

Private Sub Wrap(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs)
    txt2.TextWrapping = System.Windows.TextWrapping.Wrap
    txt1.Text = "The TextWrap property is currently set to Wrap."
End Sub

Private Sub NoWrap(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs)
    txt2.TextWrapping = System.Windows.TextWrapping.NoWrap
    txt1.Text = "The TextWrap property is currently set to NoWrap."
End Sub

Private Sub WrapWithOverflow(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs)
    txt2.TextWrapping = System.Windows.TextWrapping.WrapWithOverflow
    txt1.Text = "The TextWrap property is currently set to WrapWithOverflow."
End Sub

另请参阅