title: Word Interop- Are there any unique identifiers in document object's paragraph/ranges?
body: <p>My problem is this: I open a word document (using WordprocessingDocument) and take specific paragraphs from it. Then, I need to find these paragraphs (by text) in a Word activeDocument using .NET VSTO.</p>
  <p>I can easily find the text using range.Text.Contains on the whole document, but since the text can appear more than once, I can't know which appearance it is.</p>
  <p>Do paragraphs or ranges have any unique identifiers in the document?</p>
  <p>Alternatively I can iterate all paragraphs and take the right one by the running index, but that is extremely costly in performance. So I need to get the information from range somehow.</p>
  <p>Any ideas? Thank you</p>