public void EndMusicConcert()
{
// Handle the end of broadcasting of a musci concert...
// ...
// ...
// lastly add back news updates after concert
subject.AddObserver(this);
var color = Console.ForegroundColor;
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(" <----------------- End of Music concert --------------> ");
Console.ForegroundColor = color;
}
public NewsChannel1(NewsAgency agency)
{
agency.AddObserver(this);
}
public SportsChannel(NewsAgency agency)
{
agency.AddObserver(this);
}
public MusicNowChannel(NewsAgency agency)
{
subject = agency;
subject.AddObserver(this);
}
