Panel控件绘图闪烁问题

Question

继承Panel，开启双缓冲。                public DoubleBufferPanel()
{
InitializeComponent();
                        this.DoubleBuffered = true;
SetStyle(ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw | ControlStyles.AllPaintingInWmPaint, true);
    SetStyle(ControlStyles.UserPaint, true);
this.UpdateStyles();
        }

Answer 1

        protected override void OnPaintBackground(PaintEventArgs e)
        {            //不绘制背景
        }

Answer 2

up，也可以用backgroundimage，不过简单点