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如何：以程式設計方式變更 TextWrapping 屬性

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範例

以下程式碼範例示範如何以程式設計方式來變更 TextWrapping 屬性的值。

在 XAML 中，三個 Button 元素被放置在一個 StackPanel 元素內。 Button 的每個 Click 事件都與程式碼中的一個事件處理常式相對應。 事件處理常式會使用與按一下按鈕時其將套用至 txt2 的 TextWrapping 值相同的名稱。 此外，txt1 中的文字 (XAML 中未顯示的 TextBlock) 也會更新以反映屬性中的變更。

<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

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