如何在WPF TextBlock中改变TextDecoration的颜色

本文关键字：改变 TextDecoration 颜色 TextBlock WPF | 更新日期: 2023-09-27 18:12:53

我正在改变TextDecoration的颜色:

<Grid Background="{x:Null}"
      Margin="10,0,10,0">
    <TextBlock Text="{Binding Value}"
               VerticalAlignment="Center"
               HorizontalAlignment="Center"
               Style="{StaticResource SWMRegularTextBlockStyle}"
               Margin="0"
               FontSize="{DynamicResource RegularFontSize}"
               x:Name="tb" />
        <Line VerticalAlignment="Center"
              HorizontalAlignment="Center"
              Visibility="{Binding InStock, Converter={StaticResource ReverseBooleanToVisiblity}}"
              Stroke="Red"
              Margin="0"
              StrokeThickness="2"
              X1="1"
              Stretch="Fill"
              Width="{Binding ActualWidth, ElementName=tb, UpdateSourceTrigger=PropertyChanged}" />
</Grid>

但是当Text有两行时，它失败了。请帮我更改TextDecoration的颜色。提前谢谢。

注意:我想要TextBlock前景和通过线在不同的颜色。

如何在WPF TextBlock中改变TextDecoration的颜色

我想这就是你要找的。

<TextBlock Text="{Binding Value}" VerticalAlignment="Center" HorizontalAlignment="Center" Style="{StaticResource  SWMRegularTextBlockStyle}" Margin="0" FontSize="{DynamicResource RegularFontSize}" x:Name="tb" >
   <TextBlock.TextDecorations>
        <TextDecoration Location="Strikethrough">
            <TextDecoration.Pen>
                <Pen Brush="Red" />
            </TextDecoration.Pen>
        </TextDecoration>
    </TextBlock.TextDecorations>
</TextBlock>

问题是你在文本上叠加了一行。当文本换行时，你需要创建另一行，这并不容易。

您可以解决这个问题，根本不使用行，而是使用特定的笔的TextDecoration的划线后面的代码。

答案在这里

    private void WindowLoaded(object sender, EventArgs e)
    {
        // Fill the overline decoration with a solid color brush.
        TextDecorationCollection myCollection = new TextDecorationCollection();
        TextDecoration myStrikeThrough = new TextDecoration();
        myStrikeThrough.Location = TextDecorationLocation.Strikethrough;
        // Set the solid color brush.
        myStrikeThrough.Pen = new Pen(Brushes.Red, 2);
        myStrikeThrough.PenThicknessUnit = TextDecorationUnit.FontRecommended;
        // Set the underline decoration to the text block.
        myCollection.Add(myStrikeThrough);
        tb.TextDecorations = myCollection;
    }

然后简化XAML。删除Line控件，并将Loaded="WindowLoaded"添加到Window

相关文章：