Tab Item and Tab Control Border Style

Question

How do I style the Tab Control Border so that the selected Tab Item does not have a line underneath it?

Answer 1

Instead of modifying tabcontrol template, you may as well just modify the TabItem template, by adding two lines to cover up the border, and using minus margins for covering up.

(Please take a look at "TopLineCover" and "BottomLineCover" borders.)