private static void OpenAndAddTextToWordDocument(string filepath, string txt)
{
// Open a WordprocessingDocument for editing using the filepath.
WordprocessingDocument wordprocessingDocument =
WordprocessingDocument.Open(filepath, true);
// Assign a reference to the existing document body.
Body body = wordprocessingDocument.MainDocumentPart.Document.Body;
// Add new text.
Paragraph para = body.AppendChild(new Paragraph());
Run run = para.AppendChild(new Run());
run.AppendChild(new Text(txt));
// Close the handle explicitly.
wordprocessingDocument.Close();
}
}