I want to click a button to enlarge the picture in a picture box. How can I 开发者_StackOverflow社区do that?
I'm not sure exactly what you're looking for but I think you'll find the control presented in this CodeProject article useful:
A scrollable, zoomable, and scalable picture box
The control extends PictureBox and adds a number of nice features, such as zooming and panning using a context menu and a 'thumbnail view' window.
If you can't use the control itself I'm sure you;ll benefit from studying the source.
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