splitContainer scroll panels in the same time

// add during initialization
splitContainer1.Panel1.Scroll += new ScrollEventHandler(Panel1_Scroll);
splitContainer1.Panel2.Scroll += new ScrollEventHandler(Panel2_Scroll);

        void Panel2_Scroll(object sender, ScrollEventArgs e)
        {
            if (e.ScrollOrientation == ScrollOrientation.VerticalScroll)
            {
                splitContainer1.Panel1.VerticalScroll.Value = splitContainer1.Panel2.VerticalScroll.Value;
            }
            else if (e.ScrollOrientation == ScrollOrientation.HorizontalScroll)
            {
                splitContainer1.Panel1.HorizontalScroll.Value = splitContainer1.Panel2.HorizontalScroll.Value;
            }
        }

        void Panel1_Scroll(object sender, ScrollEventArgs e)
        {
            if (e.ScrollOrientation == ScrollOrientation.VerticalScroll)
            {
                splitContainer1.Panel2.VerticalScroll.Value = splitContainer1.Panel1.VerticalScroll.Value;
            }
            else if (e.ScrollOrientation == ScrollOrientation.HorizontalScroll)
            {
                splitContainer1.Panel2.HorizontalScroll.Value = splitContainer1.Panel1.HorizontalScroll.Value;
            }
        }