public static void Main()
{
// Create a Thermostat instance.
Thermostat t = new Thermostat();
// Create the Thermostat observers.
new TemperatureChangeObserver(t);
new TemperatureAverageObserver(t);
// Loop, getting temperature readings from the user.
// Any noninteger value will terminate the loop.
do
{
Console.WriteLine(Environment.NewLine);
Console.Write("Enter current temperature: ");
try
{
// Convert the user's input to an integer and use it to set
// the current temperature of the Thermostat.
t.Temperature = Int32.Parse(Console.ReadLine());
}
catch (Exception)
{
// Use the exception condition to trigger termination.
Console.WriteLine("Terminating Observer Pattern Example.");
// Wait to continue.
Console.WriteLine(Environment.NewLine);
Console.WriteLine("Main method complete. Press Enter");
Console.ReadLine();
return;
}
} while (true);
}
// A constructor that takes a reference to the Thermostat object that
// the TemperatureAverageObserver object should observe.
public TemperatureAverageObserver(Thermostat t)
{
// Create a new TemperatureChangedEventHandler delegate instance and
// register it with the specified Thermostat.
t.TemperatureChanged += this.TemperatureChange;
}