我想在保持相同格式的同时突出显示文本:粗体,下划线,斜体......但我只是设法通过丢失格式来突出显示文本。达到我想要的是否正确或是否有另一种方法来突出显示文本而不必“拆分”它然后重新组装它?
XAML:
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<StackPanel HorizontalAlignment="Center" VerticalAlignment="Center" Width="300">
<RichTextBlock x:Name="RichTextBlockText">
<Paragraph x:Name="Testo">
<Run Foreground="Gray" FontFamily="Segoe UI Light" FontSize="24">
This is a
</Run>
<Run Foreground="Teal" FontFamily="Georgia" FontSize="18" FontStyle="Italic">
different text
</Run>
<Run Foreground="Black" FontFamily="Arial" FontSize="14" FontWeight="Bold">
format
</Run>
</Paragraph>
</RichTextBlock>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="0,25,0,0">
<TextBox x:Name="txbToFind" Height="32" VerticalAlignment="Bottom" Width="200" HorizontalAlignment="Left"/>
<Button x:Name="btnFind" Content="Find" Click="btnFind_Click" HorizontalAlignment="Right" VerticalAlignment="Center"/>
</Grid>
</StackPanel>
</Grid>
xaml.cs:
public sealed partial class MainPage : Page
{
public MainPage()
{
this.InitializeComponent();
}
private void btnFind_Click(object sender, RoutedEventArgs e)
{
string text = string.Empty;
TextBlock NewText = new TextBlock();
string toFind = txbToFind.Text;
for (int a = 0; a <= Testo.Inlines.Count - 1; a++)
{
Run runCorrente = Testo.Inlines[a] as Run;
string currentText;
currentText = runCorrente.Text;
text += currentText;
}
if (text.IndexOf(toFind) >= 0)
{
string[] partOfText = text.Split(new String[] { toFind }, StringSplitOptions.None);
Paragraph paragraph = new Paragraph();
for (int a = 0; a <= partOfText.Length - 1; a++)
{
var piece = partOfText[a];
Run run = new Run();
run.Text = piece;
paragraph.Inlines.Add(run);
if (a < partOfText.Length - 1)
{
MakeHighlightedParagraph(paragraph, toFind, RichTextBlockText);
}
}
RichTextBlockText.Blocks.Clear();
RichTextBlockText.Blocks.Add(paragraph);
}
}
private void MakeHighlightedParagraph(Paragraph paragraph, string textToHighlight, RichTextBlock textBlock)
{
InlineUIContainer cont = new InlineUIContainer();
var border = new Border();
border.MinWidth = textBlock.FontSize / 3.5;
border.Background = new SolidColorBrush(Colors.Yellow);
var text = new TextBlock();
text.Text = textToHighlight;
var margin = textBlock.FontSize * (3.0 / 14.0) + 1.0;
text.Margin = new Thickness(0.0, 0.0, 0.0, -margin);
border.Child = text;
cont.Child = border;
paragraph.Inlines.Add(cont);
}
}
提前致谢...!
我找到了一些可能的解决方案,但我不能使用它们:
TextRange - 选择文本的一部分; TextHighlighter - 突出显示一个或多个文本范围。
但它们是如何使用的?请帮帮我..!
答案 0 :(得分:1)
要将TextHighlighter
与RichTextBlock
一起使用,您可以先创建所需的TextRange
,然后使用它们初始化TextHighlighter
,然后将其应用到RichTextBlock
使用TextHighlighters
属性:
TextRange textRange = new TextRange() { StartIndex = 3, Length = 10 };
TextHighlighter highlighter = new TextHighlighter()
{
Background = new SolidColorBrush(Colors.Yellow),
Ranges = { textRange }
};
//add the highlighter
RichBlock.TextHighlighters.Add(highlighter);
答案 1 :(得分:0)
#preview
控件中没有显示简单的属性或方法,因为您需要在RichTextBlock
中查找文本而不会丢失格式,您应该在每个文本中设置属性RichTextBlock
让他们再次拥有格式。作为一个简单的场景,您也可以只通过RichTextBlock
对象过滤文本,然后配置所有文本的格式。