[DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool ShowScrollBar(IntPtr hWnd, int wBar, bool bShow); private enum ScrollBarDirection {
         SB_HORZ = 0,     SB_VERT = 1,     SB_CTL = 2,     SB_BOTH = 3 } protected override void WndProc(ref System.Windows.Forms.Message m) {
         ShowScrollBar(panel1.Handle, (int)ScrollBarDirection.SB_BOTH, false);     base.WndProc(ref m); }