public void Play()
{
Console.WriteLine("PlayingMovie");
Thread.Sleep(3000);
//you fire an event simply by calling it like a method
//if(MovieEnd != null)
//{
// MovieEnd();
//}
MovieEnd?.Invoke(Currentmovie.Title);
//that will run all methods that are subscribed to the event
//events with no subcribers are null, and cause null exception when fired
//so we need to check against null first
//in c#, we have a couple of null handling operators
//?, is the null-conditional operator
//it means, behave like . if the thing to the left is not null
//otherwise do nothing at all
//otherwise do nothing at all
}
public void Play()
{
Console.WriteLine("Playing movie.");
Thread.Sleep(3000); // movie plays for 3 seconds
// you fire an event simply by calling it like a method
//MovieEnd?.Invoke();
MovieEnd?.Invoke(CurrentMovie.Title); // pass parameters to all subscribers
// that will run all methods that are subscribed to the event.
// events with no subscribers are null, and cause null exception when fired.
// so we need to check against null first.
// in C#, we have a couple of null-handling operators.
// ?. is the null-conditional operator.
// it means, behave like . if the thing to the left is not null.
// otherwise, do nothing at all.
//if (a != null)
//{
// if (a.b != null)
// {
// a.b.operate();
// }
//}
//a.b.operate();
}