滚动条位置设置

private  int  y;
        private  void  Form1_Load( object  sender, EventArgs e)
        {
            y = 0;
        }
        private  void  Form1_Paint( object  sender, PaintEventArgs e)
        {
            this .VerticalScroll.Value = y;
        }

        private  void  Form1_Scroll( object  sender, ScrollEventArgs e)
        {
            y =  this .VerticalScroll.Value;
        }