static void Main(string[] args)
{
// create concrete audio class and inject it into the service provider (dependency injection)
ConsoleAudio consoleAudio = new ConsoleAudio();
Locator.ProvideAudioService(consoleAudio);
Locator.GetAudio().PlaySound(1); // no awareness of the concrete ConsoleAudio class
Console.WriteLine();
// can use null object
Locator.ProvideAudioService(null);
Locator.GetAudio().PlaySound(2);
Console.WriteLine();
// can change implementation details during runtime, e.g. to a logging audio service
LoggedAudio loggedAudio = new LoggedAudio(consoleAudio);
Locator.ProvideAudioService(loggedAudio);
Locator.GetAudio().PlaySound(3);
Console.WriteLine();
// can tempoarily disable audio playback (but keep the logging) using a null object
loggedAudio = new LoggedAudio(null);
Locator.ProvideAudioService(loggedAudio);
Locator.GetAudio().PlaySound(4);
Console.ReadLine();
}
static void Main(string[] args)
{
// create concrete audio class and inject it into the service provider (dependency injection)
ConsoleAudio consoleAudio = new ConsoleAudio();
Locator.ProvideAudioService(consoleAudio);
Locator.GetAudio().PlaySound(1); // no awareness of the concrete ConsoleAudio class
Console.WriteLine();
// can use null object
Locator.ProvideAudioService(null);
Locator.GetAudio().PlaySound(2);
Console.WriteLine();
// can change implementation details during runtime, e.g. to a logging audio service
LoggedAudio loggedAudio = new LoggedAudio(consoleAudio);
Locator.ProvideAudioService(loggedAudio);
Locator.GetAudio().PlaySound(3);
Console.WriteLine();
// can tempoarily disable audio playback (but keep the logging) using a null object
loggedAudio = new LoggedAudio(null);
Locator.ProvideAudioService(loggedAudio);
Locator.GetAudio().PlaySound(4);
Console.ReadLine();
}
