How to paint our changes in runtime before its being viewe by user

问题

I am having a windows form that whenever I want its controls like picturebox update normally I need to hide it and show it to let the cahnges happen. This causes a blink which I want to avoid.

Does anybody know what are my options? It is a picture box from form1 being copied to form2 and let the user see the changes.

Thanks

回答1:

Why can you not change the control's attributes without hiding it?

Some options:

1. Don't hide the controls before changing them.
2. Show a loading animation overlay for the controls being updated (or the entire form if you are updating more than just a few).
3. I'm not quite sure exactly what you're trying to do, but double buffering may help you out.

If these options don't help, please describe your issue in more detail and I will try to provide assistance.

回答2:

I don't know if this will help, but, instead of hiding the picturebox, you can try:

PictureBox.Invalidate();

after you copy the picturebox

来源：https://stackoverflow.com/questions/5117371/how-to-paint-our-changes-in-runtime-before-its-being-viewe-by-user