Excel insert rows (not Add)

Question

I have an Excel \'07 Template file for a purchase order. On the template, there\'s only room for 3 rows worth of items, then the template shows the Total.

So, basica

Answer 1

public static void CopyRowsDown(_Worksheet worksheet, int startRowIndex, int countToCopy)
    {
        for (int i = 1; i < countToCopy; i++)
        {
            var range = worksheet.get_Range(string.Format("{0}:{0}", startRowIndex, Type.Missing));
            range.Select();
            range.Copy();

            range = worksheet.get_Range(string.Format("{0}:{1}", startRowIndex + i, startRowIndex + i, Type.Missing));
            range.Select();
            range.Insert(-4121);
        }
    }

works for any count