Explain what you are trying to do?
A panel is a container for other controls. You don't just close them.
Disabling them will disable the controls inside them. Setting visibility will change the visibility of the controls inside them too. Neither of these sound like what you want...
When you say you want to close a panel, define close?
If you want to close it, why not use Mdi?
- Perhaps explaining what you are doing
- How you are doing it (Provide your code)
- Explain what you expect to happen
- And report what is happening, and maybe you will get better responses.