title: Silverlight 4 closeable tabs in TabControl
body: <p>I have close button in the header of each tab of TabControl. Tabs are created dynamically in code and a datatemplate (in which the close button was defined) is applied. Now I want close-buttons to be visible only when tab is active. Is it possible to bind button's visibility property to tabitem's activeness (probably IsSelected property)? How?</p>