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Why doesn't PictureBox clean up immediately?

E
elysha last edited by
Tell me there's an event that when you press the "PictureBox" button, PictureBox creates a blank drawing sheet. I'm using this code.
```
Graphisc graphics1;
graphics1.Clear(pictureBox1.BackColor );
```
But he purifies PictureBox only after you started drawing a new picture, not at once. Where did I get a mistake?
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1 Reply Last reply
A
Anderson last edited by
Maybe that?
```
pictureBox1.Invalidate();
```
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Why doesn't PictureBox clean up immediately?

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