// 2. Observer Pattern
private static void RunObserverPatternDemo()
{
WeatherPublisher weatherPublisher = new WeatherPublisher();
ISubscriber currentConditionDisplay = new CurrentConditionsDisplay(weatherPublisher);
ISubscriber statisticalDisplay = new StatisticalDisplay(weatherPublisher);
Console.WriteLine("Set Weather the first time");
weatherPublisher.SetWeatherStats(0, 0, 0);
Console.WriteLine();
Console.WriteLine("Set Weather the second time");
weatherPublisher.SetWeatherStats(1, 1, 1);
Console.WriteLine();
Console.WriteLine("Unsubscribe Current Condition Display");
currentConditionDisplay.UnSubscribe();
Console.WriteLine("Set Weather the third time");
weatherPublisher.SetWeatherStats(2, 2, 2);
Console.WriteLine();
Console.WriteLine("Unsubscribe Current Statistical Display");
statisticalDisplay.UnSubscribe();
Console.WriteLine("Set Weather the fourth time");
weatherPublisher.SetWeatherStats(3, 3, 3);
Console.WriteLine();
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionsDisplay currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurements(80, 65, 30.4f);
weatherData.SetMeasurements(82, 70, 29.2f);
weatherData.SetMeasurements(78, 90, 29.2f);
Console.ReadLine();
}
