How can i hide/remove the pictureBox background image on/off?
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I have a pictureBox with an image inside.
I want that i click on a button the image in the pictureBox will gone then i click the button again the image will be back. 

In the pictureBox paint event im drawing some lines.
So if im doing pictureBox1.Refresh(); it will draw the lines. I want that if i click on a button the image will not display on/off.

pictureBox1 = null; or pictureBox1.Image.Dispose(); dosent work its showing me big red x with white background.