title: Highlight Line on GotFocus
body: <p>I want to highlight a Line if it was clicked. Like a TreeViewItem is highlighted while it is selected or got focused (It seems, that there is a diffrence - While it is focused(and selected) its Highlight-Color is blue, if it only got selected and lost focused its grayish.).
  I tried to catch the Gotfocus Event of Line without knowing which property I want to change, but it is not even firing(Though Focusable = true).
  I got the MouseDown event firing(which i primarly don't want to use for this) and still don't know which property to change. Msdn and Google returns nothing senseful.
  Any Ideas?
  Thanks in Advance.</p>