how to programmatically change the background image on form c#

I need to change the开发者_如何学Go background image of my form when i klick a button, and change it back to null again the second time it is clicked, how can i do this?

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Use BackgroundImage property:

form.BackgroundImage = image;

to hide the image:

form.BackgroundImage = null;

Put this source code to ClickButton method:

form.BackgroundImage = form.BackgroundImage == null ? image : null;

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You should be able to set the BackgroundImage property of your form from the event handler of that button.

For example you could do it like this:

this.BackgroundImage = new Bitmap(@"c:\Temp\image.bmp");

In order to remove the image, set the property back to null.

The image can also come from a resource.