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What are does GraphicsPath and Invalidate in C#?
How does Invalidate differ from Refresh in C#?
In C#, the Refresh method is similar to Invalidate in that it forces a control to be repainted. The difference is that Refresh also updates the control immediately, whereas Invalidate schedules the update for the next time the control is painted. This means that Refresh can impact performance and may not be suitable for larger or more complex controls. In general, it's best to use Invalidate when possible and to only use Refresh when immediate updates are required.