ComponentArt is a leading component vendor specializing in the creation of user interface and data visualization software for Microsoft’s .NET platform. Our primary goal is to help developers worldwide advance their software development effort by providing powerful building blocks that allow them to focus on the business logic, core value, and primary function of their application or website.
http://www.componentart.com/webui/demos/
a all library of components are available in the Demos
and you have access to the code source
Good2know 