Tree is a component that renders a tree control on the page.
The most important tree features are:

- Native support for Ajax operations
- Support for "ajax", "client" and "server" switch types
- Built-in drag/drop capabilities
- Flexible look

Ajax switch type
Client switch type
Server switch type

Note how the tree switched on "client" does not "remember" its state when whole page is reloaded. At the same time "ajax" tree remembers its state without any additional code.