this by susbstituting the FlickerFreeListBox with a DataGridView, which also fixes
the selection bug, plus we don't have to do custom drawing or costly string
measurements. This change will also aid the fix of CA-20870.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>
NewAction to use the Action<ActionBase> delegate instead of EventHandler. Thus
there is no need to fire them with Empty or null EventArgs and on several occasions
we avoid casting objects in the event handlers.
Signed-off-by: Konstantina Chremmou <konstantina.chremmou@citrix.com>