public FrmVolumeDisplay(IMP3Player IMP3Player)
{
InitializeComponent();
_IMP3Player = IMP3Player;
_IMP3Player.AddObserver(this);
}
public FrmMP3Display(IMP3Player mP3Player, IMP3Controller mP3Controller)
{
InitializeComponent();
_MP3Player = mP3Player;
_MP3Controller = mP3Controller;
_MP3Player.AddObserver((ISongObserver)this);
_MP3Player.AddObserver((IVolumeObserver)this);
FrmVolumeDisplay frmVolumeDisplay = new FrmVolumeDisplay(_MP3Player);
frmVolumeDisplay.Show();
Update(1);
Update(null);
}