如何以编程方式更改表单 C# 上的背景图像
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how to programmatically change the background image on form c#
提问by Darkmage
I need to change the 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?
我需要在单击按钮时更改表单的背景图像，并在第二次单击时再次将其更改回 null，我该怎么做？
采纳答案by Micha? Ziober
Use BackgroundImage property:
使用 BackgroundImage 属性：
form.BackgroundImage = image;
to hide the image:
隐藏图像：
form.BackgroundImage = null;
Put this source code to ClickButton method:
将此源代码放入 ClickButton 方法：
form.BackgroundImage = form.BackgroundImage == null ? image : null;
回答by treaschf
You should be able to set the BackgroundImage property of your form from the event handler of that button.
您应该能够从该按钮的事件处理程序设置表单的 BackgroundImage 属性。
For example you could do it like this:
例如，你可以这样做：
this.BackgroundImage = new Bitmap(@"c:\Temp\image.bmp");
this.BackgroundImage = new Bitmap(@"c:\Temp\image.bmp");
In order to remove the image, set the property back to null.
为了删除图像，将该属性设置回 null。
The image can also come from a resource.
图像也可以来自资源。
