PanelControlPro. The new panel control for use in Visual Studio. NET©. Improve the design of your forms and applications. PanelControlPro supports gradient backgrounds, round corners and more. Easy to install and easy to use - just take a look. With the release of version 2 a lot of new features were implemented. Some of them are variable round corners support even with background images that fit beautifully in the round corner boxes and variable border width. PanelControlPro is a component for use in your Visual Studio .NET environment and can be implemented very easy.