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如何：以编程方式更改 TextWrapping 属性

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更新：2007 年 11 月

示例

下面的代码示例演示如何使用 Microsoft Visual Basic .NET 以编程方式更改 TextWrapping 属性的值。

在 StackPanel 元素中按照可扩展应用程序标记语言 (XAML) 的格式放置四个按钮。每个按钮的 Click 事件都对应于一个在以下 Microsoft Visual Basic .NET 代码中定义的子过程。在调用与每个事件相关的 TextWrapping 值之后，由 Name  txt2 标识的 TextBlock 将进行更新，以反映该属性所发生的更改。

<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>

与上述定义的 Button 单击关联的事件是在 Microsoft Visual Basic .NET 子过程中处理的。每个 Click 都将 TextWrapping 属性的值更改为在该过程中指定的值并更新元素 txt1 以反映属性所发生的更改。

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

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.";
}

请参见

参考

TextWrapping

TextWrapping