access the second column data in gridview in C#

hi
i want to acces the
  protected void GvProductdetail_RowDataBound(object sender, GridViewRowEventArgs e)         {             foreach (GridViewRow gr in GvProductdetail.Rows)             {                 if (e.Row.RowType == DataControlRowType.DataRow)                 {                     string templateid = gr.Cells[1].Text;
        }
}
but i want to hide  gr.Cells[1].Text  data  while binding in gridview