static void Main(string[] args)
{
Campainha campainha = new Campainha();
//campainha.Tocar();
//campainha.OnCampainhaTocou = new Action(() => { });
campainha.OnCampainhaTocou += CampainhaTocou1;
campainha.OnCampainhaTocou += CampainhaTocou2;
campainha.Tocar();
Console.ReadKey();
}
static void Main(string[] args)
{
Campainha campainha = new Campainha();
campainha.OnCampainhaTocou += CampainhaTocou1;
campainha.OnCampainhaTocou += CampainhaTocou2;
Console.WriteLine("A campainha será tocada");
campainha.Tocar();
campainha.OnCampainhaTocou -= CampainhaTocou2;
Console.WriteLine("A campainha será tocada");
campainha.Tocar();
}