Getting row index of clicked row in crystal report

See more:

C#

CrystalReports

Hi i am trying to get the value of a field in crystal report while clicking a row. I can access the first or second or any other row by

string accode = rpt.Rows[1][0].ToString();

or providing the row index. My problem is how can i get the row index of the currently selected row or clicked row in the report. ie something like

string accode = rpt.Rows[clicked_row_index][1].ToString();

Is there any idea to get the clicked row's index? I searched on Google but nothing found. Waiting for your reply. Thanks in advance.