CODEWITHSUNDEEP
c#wpfrichtextbox
Clyde
Clyde

Reputation: 423

RichTextBox does not copy new lines to the clipboard

In the code, I generate formatted text into a WPF RichTextBox. I use Environment.NewLine to insert line break. Everything looks fine. However, when I copy the contents of a RichTextBox to Clipboard (using RichTextBox context menu) and paste it into Word or WordPad, line breaks disappear. However, if I paste the contents of the clipboard as plain text (e.g. into notepad), the new lines do not disappear. Don't know why this is so?

Update:

// _richTextBox is my object RichTextBox
var doc = _richTextBox.Document;
var paragraph = doc.Blocks.FirstOrDefault() as Paragraph;
if (paragraph == null) return;

var span = new Span();
span.Inlines.Add(new Underline(new Run($"Header: {Environment.NewLine}")));
span.Inlines.Add(new Run("Text content"));

paragraph.Inlines.Add(span);

Upvotes: 0

Views: 564

Answers (2)

Wappenull
Wappenull

Reputation: 1409

I am working with RichTextBox which client must be copy-paste with Word application. To my surprise, the Environment.NewLine did not work. You have to insert paragraph.Inlines.Add( new LineBreak( ) );

Here is complete summary when copy paste from RichTextBox to each application:

enter image description here

  1. The wrong-est \n not working in any application, unless it is newline aware such as Notepad++

         var doc = m_RichTextBox.Document;
     doc.Blocks.Clear( );
     var p = new Paragraph( );
     doc.Blocks.Add( p );

     p.Inlines.Add( new Run( "Line1\n" ) );
     p.Inlines.Add( new Run( "Line2\n" ) );
     p.Inlines.Add( new Run( "Line3\n" ) );

  2. The Environment.NewLine Notepad says ok, but Word still decided to protest.

         /* Same setup code omitted .... */
     p.Inlines.Add( new Run( "Line1" + Environment.NewLine ) );
     p.Inlines.Add( new Run( "Line2" + Environment.NewLine ) );
     p.Inlines.Add( new Run( "Line3" + Environment.NewLine ) );

  3. The correct one

         /* Same setup code omitted .... */
     p.Inlines.Add( new Run( "Line1" ) );
     p.Inlines.Add( new LineBreak( ) );
     p.Inlines.Add( new Run( "Line2" ) );
     p.Inlines.Add( new LineBreak( ) );
     p.Inlines.Add( new Run( "Line3" ) );
     p.Inlines.Add( new LineBreak( ) );

Upvotes: 0

Clyde
Clyde

Reputation: 423

The solution was simple in the end. I didn't notice that there was a LineBreak object. If you use LineBreak instead of \r\n (Environment.NewLine), then line break will work in both plain text and formatted text.

Upvotes: 1

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