protected void Link(NavigationItem prev, NavigationItem next, NavigationDirection direction)
{
if (direction == NavigationDirection.Vertical)
{
prev.Bind(NavigationItemDirection.Down, next.GetSelectable(NavigationItemDirection.Down));
next.Bind(NavigationItemDirection.Up, prev.GetSelectable(NavigationItemDirection.Up));
}
else
{
prev.Bind(NavigationItemDirection.Right, next.GetSelectable(NavigationItemDirection.Right));
next.Bind(NavigationItemDirection.Left, prev.GetSelectable(NavigationItemDirection.Left));
}
}