asp.net获取行索引

 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
        {
            int index = 0;
            if (e.CommandName == "EditCOQTY" || e.CommandName == "EditPO" || e.CommandName == "EditHKIn" || e.CommandName == "EditHKOut")
            {
                GridViewRow gvrow = (GridViewRow)(((LinkButton)e.CommandSource).NamingContainer); //获取被点击的linkButton所在的GridViewRow
                index = gvrow.RowIndex; //获取到行索引 RowIndex
               
            }
            string ftyno = GridView1.Rows[index].Cells[0].Text;//厂号
            if (e.CommandName == "EditCOQTY")
            {
                Response.Redirect("HK8008COQty.aspx?ftyno=" + ftyno);
            }
            else if (e.CommandName == "EditPO")
            {
                Response.Redirect("HK8008COQty.aspx?ftyno=" + ftyno);
            }
            else if (e.CommandName == "EditHKIn")
            {
                Response.Redirect("HK8008COQty.aspx?ftyno=" + ftyno);
            }
            else if (e.CommandName == "EditHKOut")
            {
                Response.Redirect("HK8008COQty.aspx?ftyno=" + ftyno);
            }
        }