Question

var p1 = document.Paragraphs.Add(ref o);
p1.Range.InsertParagraphAfter();

Now I want to grab the paragraph that was just created using InsertParagraphAfter() and modify it. How can I access it?

Answer 1

InsertParagraphAfter is supposed to extend the current selection to include the new paragraph. So if you start by creating an empty selection at the end of the existing paragraph, the current selection should be set to the new paragraph after calling InsertParagraphAfter.

Note that I have not tested the following code (I have not even tried compiling it), so I may be way off.

var p1 = document.Paragraphs.Add(ref o);    
// Set the selection to the end of the paragraph.
document.Range(p1.Range.End, p1.Range.End).Select();
p1.Range.InsertParagraphAfter();
// InsertParagraphAfter should expand the active selection to include
// the newly inserted paragraph.
var newParagraph = document.Application.Selection;