In excel applcation, a cell formula can has two styles, one is A1 style, another is R1C1 style. For example, cell C1 can has the "=A1+B1" in A1 style and "=RC[-2]+RC[-1]" in R1C1 style for the same formula. This can be set in excel file option which is located in Excel Options - Formula - R1C1 checkbox.
With OpenXML SDK, I read the cell formula by cell.CellFormula.Text, the result is always in A1 style whether the file is in A1 style or R1C1 style. Anyone know how to get the R1C1 text for cell formula? Thanks a lot.