winform 控件太多，加载卡顿问题

https://blog.csdn.net/yue1453544229/article/details/106867636/

protected override CreateParams CreateParams { get { CreateParams cp = base.CreateParams; cp.ExStyle |= 0x02000000; // 用双缓冲绘制窗口的所有子控件 return cp; } }