How to: Append Text to the Paragraph

Dec 12, 2022

The following code snippet appends text to the end of the current paragraph. Note that the DocumentPosition.BeginUpdateDocument call is required for proper operation within header/footer since it returns a SubDocument interface.

View Example: WinForms RichEdit Document API

Range.cs
Range.vb

csharp

Document document = richEditControl.Document;
document.BeginUpdate();
document.AppendText("First Paragraph\nSecond Paragraph\nThird Paragraph");
document.EndUpdate();

DocumentPosition pos = document.CaretPosition;
SubDocument doc = pos.BeginUpdateDocument();
Paragraph par = doc.Paragraphs.Get(pos);
DocumentPosition newPos = doc.CreatePosition(par.Range.End.ToInt() - 1);
doc.InsertText(newPos, "<<Appended to Paragraph End>>");
pos.EndUpdateDocument(doc);

document.BeginUpdate()
document.AppendText("First Paragraph" & vbLf & "Second Paragraph" & vbLf & "Third Paragraph")
document.EndUpdate()

Dim pos As DocumentPosition = document.CaretPosition
Dim doc As SubDocument = pos.BeginUpdateDocument()
Dim par As Paragraph = doc.Paragraphs.Get(pos)
Dim newPos As DocumentPosition = doc.CreatePosition(par.Range.End.ToInt() - 1)
doc.InsertText(newPos, "<<Appended to Paragraph End>>")
pos.EndUpdateDocument(doc)