Does .NET Framework come with a TabPanel control like the one that
Visual Studio .NET uses to display all your source files in the main
window?  Particularly, I want the flat style of the tabs, the arrow
allowing you to select tabs which are "off the screen", as well as the
X which lets you close the currently open tab.

If there is not something like this with .NET, does anyone know of an
open source implementation of such a tab panel?

Thanks