可以通过设置轻拂表单的以下属性来避免闪烁
DoubleBuffered = true;

如果这样做不起作用，请对所有表单控件都进行双重缓冲，这是链接如何在表单上将缓冲网络控件加倍 [ ^ ]

You can avoid flickering by setting following property of a form which is flicked
DoubleBuffered = true;

if this not works make doublebuffered to all form controls, here is link how to double buffer net controls on a form[^]