How To Replace Text and maintain Styling?

[Bob]

We have a custom Find/Replace dialog for our RadRichTextBox.  As part of the replacement of text, we have this code:

var startPos = Document.Selection.Ranges.First.StartPosition;
var endPos = Document.Selection.Ranges.First.EndPosition;

this.CurrRichTextBox.Document.CaretPosition.MoveToPosition(endPos);

this.CurrRichTextBox.Document.Selection.SetSelectionStart(startPos);
this.CurrRichTextBox.Document.Selection.AddSelectionEnd(endPos);

StyleDefinition style = new StyleDefinition();
style.CopyPropertiesFrom(this.CurrRichTextBox.CurrentEditingStyle);

this.CurrRichTextBox.Delete(false);
this.CurrRichTextBox.Document.Insert(s, style);

 

However, this code uses the deprecated Insert method, and this also causes the history to be cleared.  What is the now correct method for replacing text and maintaining the styling of the text?  Can you please provide a code example?  I have tried to search through documentation, but I could not find any examples.

Thanks, Bob

 

 

 

 

[Dimitar]

Hi Bob,

You can use the following code to replace the obsoleted method: 

var editor = new RadDocumentEditor(radRichTextBox.Document);
var span = new Span(s);
 
editor.InsertInline(span);
editor.ChangeSpanStyle(style);

I hope this helps. Should you have any other questions do not hesitate to ask.

Regards,
Dimitar
Progress Telerik

[Bob]

Hello Dimitar,

The text is updated without losing history now, but unfortunately, the style is not being set.  I can see the style definition contains the changes from the replaced span (bold, italic in my test), but the new span does not reflect those styles and remains normal.   Please see attached properties for before (old word) and after (new word).  Please let me know if I can provide any more information.

Thanks,

Bob

[Dimitar]

Hi Bob,

Can you try the following and see if it works on your side: 

var editor = new RadDocumentEditor(radRichTextBox.Document);
var span = new Span(s);
span.CopyPropertiesFromStyle(style);

editor.InsertInline(span);

I am looking forward to your reply.

Regards,
Dimitar
Progress Telerik

[Bob]

Dimitar, this works perfect, thank you!