TabPanel is a subclass of Panel which has an Items collection used to add many other Container type components, each of which will become a tab. TabPanel overrides how this Items collection is rendered because internally TabPanel uses a CardLayout layout manager allowing it to hide each child item until it is activated. A tab bar shows the tabs. The title and icon of each item in the Items collection is also used to set the tab's title and icon. Therefore, unlike normal panels, a tab item won't render a header.
With a TabPanel, you can programmatically add tabs. You can add some at the moment a TabPanel is created while adding others later if needed. The contents of the tabs can be configured to render immediately, or when the tab is activated (the default action). This is controlled by the DeferredRender property on the TabPanel class, which defaults to true. In addition, AJAX techniques can be used to load tab contents on demand.
TabPanel also provides numerous features to handle...