private void SaveToRTF(string filePath)
{
using (FileStream fileStream = new FileStream(filePath, FileMode.Create))
{
var flowDocument = Printing.CreateFlowDocumentToPrint(TextEditor);
var textRange = new TextRange(flowDocument.ContentStart, flowDocument.ContentEnd);
textRange.Save(fileStream, DataFormats.Rtf);
}
}
