WPF：获取＆QUOT;包装＆QUOT;文字出一个文本框的 [英] WPF: Get "wrapped" text out of a textbox

问题描述

有没有办法在WPF得到格式化，因为它显示在文本框时TextWrapping =自动换行的文字？

Is there a way in WPF to get the text formatted as it display on the textbox when TextWrapping="Wrap"?

<TextBox   Width="200"
           TextWrapping="Wrap"                 
           VerticalScrollBarVisibility="Auto"
           HorizontalScrollBarVisibility="Auto"  />

我试图用的TextFormatter类，但它ONTY让我绘制文本到绘图背景下我只需要和换行符包含文本。

I've tried to use TextFormatter class, but it onty allow me to draw the text to a drawing context where i only need the text with line break included.

推荐答案

下面是如何让具有明显的换行的完整文本。

Here's how to get the complete text with apparent line breaks.

请注意：

• 包括以下从<一类href="http://archive.msdn.microsoft.com/Project/Download/FileDownload.aspx?ProjectName=wpfsamples&DownloadId=10113"相对=nofollow>高级文本格式为例在您的项目：
  • CustomTextSource
  • FontRendering
  • GenericTextProperties
  • Include the following classes from Advanced Text Formatting Example in your project:
    • CustomTextSource
    • FontRendering
    • GenericTextProperties

    请参阅：高级文本格式和<一href="http://archive.msdn.microsoft.com/Project/Download/FileDownload.aspx?ProjectName=wpfsamples&DownloadId=10113"相对=nofollow>高级文本格式为例

    样品code
    XAML：

    Sample Code
    XAML:

    <Window x:Class="TextFormatterForWrappedText.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            Title="MainWindow" Height="350" Width="525">
        <Grid>
            <TextBox Width="200"
                x:Name="InputTextBox"
                TextWrapping="Wrap"
                VerticalScrollBarVisibility="Auto"
                HorizontalScrollBarVisibility="Auto" Margin="23,12,280,241" />
            <TextBox x:Name="FormattedDisplayTextBox" Height="172"
                     HorizontalAlignment="Left" VerticalAlignment="Top"
                     Margin="23,105,0,0" Width="438" AcceptsReturn="True"
                     TextWrapping="Wrap" />
            <Button HorizontalAlignment="Left" VerticalAlignment="Top"
                    Margin="257,12,0,0" Height="23" Content="Copy"
                    Name="CopyButton" Width="129" Click="CopyButton_Click" />
        </Grid>
    </Window>
    

    codebehind：

    Codebehind:

    private void CopyButton_Click(object sender, RoutedEventArgs e)
    {
        List<string> stringList = GetTextAsStringList();
        StringBuilder sb = new StringBuilder();
        foreach (string s in stringList)
        {
            sb.Append(s);
            sb.Append("\r\n");
        }
    
        Clipboard.SetData(System.Windows.DataFormats.Text, sb.ToString());
    
        FormattedDisplayTextBox.Clear();
        FormattedDisplayTextBox.Text = sb.ToString();
    }
    
    private List<string> GetTextAsStringList()
    {
        List<string> stringList = new List<string>();
        int pos = 0;
        string inputText = InputTextBox.Text;
    
        CustomTextSource store = new CustomTextSource();
        store.Text = inputText;
        store.FontRendering = new FontRendering(InputTextBox.FontSize,
                                                InputTextBox.TextAlignment,
                                                null,
                                                InputTextBox.Foreground,
                                                new Typeface(InputTextBox.FontFamily,
                                                    InputTextBox.FontStyle,
                                                    InputTextBox.FontWeight,
                                                    InputTextBox.FontStretch));
    
        using (TextFormatter formatter = TextFormatter.Create())
        {
            while (pos < store.Text.Length)
            {
                using (TextLine line = formatter.FormatLine(store,
                                        pos,
                                        InputTextBox.ViewportWidth,
                                        new GenericTextParagraphProperties(
                                            store.FontRendering),
                                        null))
                {
                    stringList.Add(inputText.Substring(pos, line.Length - 1));
                    pos += line.Length;
                }
            }
        }
    
        return stringList;
    }
    

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