public static void Observer()
{
IInvestor appleInv = new Investor("Apple");
Subject ibm = new Ibm("Shares", 123.45);
ibm.Attach(appleInv);
ibm.Price = 234.54;
}
public void TestObserver()
{
// Create IBM stock and attach investors
var ibm = new Ibm("IBM", 120.00);
ibm.Attach(new Investor("Sorros"));
ibm.Attach(new Investor("Berkshire"));
// Fluctuating prices will notify investors
ibm.Price = 120.10;
ibm.Price = 121.00;
ibm.Price = 120.50;
ibm.Price = 120.75;
// Wait for user
Console.ReadKey();
}