How to show a part of a FlowDocument?

Question

I need to shorten a FlowDocument which is shown in a FlowDocumentScrollViewer.

shows: Lorem ipsum dolor sit amet, consetetur sadipscing elitr.

should show: Lorem ipsu...

How can I do this?

Answer 1

I did it as the following. The FlowDocument is trimmed if it is longer than "maxLength":

var wholeTextRange = new TextRange(doc.ContentStart, doc.ContentEnd);
if (wholeTextRange.Text.Length > maxLength)
{
    TextPointer endPos = doc.ContentStart.GetPositionAtOffset(maxLength);
    var textRange = new TextRange(endPos, doc.ContentEnd);
    textRange.Text = "...";
}