摘要：
Invalidate marks the control (region, or rect) as in need of repainting, butdoesn't immediately repaint (the repaint is triggered when everything else hasbeen taken care of and the app becomes idle).Update causes the control to immediately repaint if any portions have beeninvalidated.Refresh cau 阅读全文
摘要：
Control.Invalidate 方法使控件的特定区域无效并向控件发送绘制消息。重载列表使控件的特定区域无效并向控件发送绘制消息。受 .NET Framework 精简版的支持。[C#]public void Invalidate();[C++]public: void Invalidate();使控件的特定区域无效并向控件发送绘制消息。还可以使分配给该控件的子控件无效。[C#]public void Invalidate(bool);使控件的指定区域无效（将其添加到控件的更新区域，下次绘制操作时将重新绘制更新区域），并向控件发送绘制消息。受 .NET Framework 精简版的支持。[ 阅读全文