How To Find Control in gridview on RowCommand event in asp.net

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)


    {


        if (e.Row.RowType == DataControlRowType.DataRow)


        {


            Label lblPrice = (Label)e.Row.FindControl("lblPrice");


            Label lblUnitsInStock = (Label)e.Row.FindControl("lblUnitsInStock");






            decimal price = Decimal.Parse(lblPrice.Text);


            decimal stock = Decimal.Parse(lblUnitsInStock.Text);






            totalPrice += price;


            totalStock += stock;






            totalItems += 1;


        }






        if (e.Row.RowType == DataControlRowType.Footer)


        {


            Label lblTotalPrice = (Label)e.Row.FindControl("lblTotalPrice");


            Label lblTotalUnitsInStock = (Label)e.Row.FindControl("lblTotalUnitsInStock");






            lblTotalPrice.Text = totalPrice.ToString();


            lblTotalUnitsInStock.Text = totalStock.ToString();






            lblAveragePrice.Text = (totalPrice / totalItems).ToString("F");


        }


    }