static void Main(string[] args)
{
Console.WriteLine("Enter one of the following number to explore the design pattern");
Console.WriteLine("1- Singleton Pattern");
Console.WriteLine("2- Singleton Thread Safety with lock Pattern");
string value = Console.ReadLine();
switch (value)
{
case "1":
Singleton objectA = Singleton.GetInstance;
objectA.PrintDetails("This is from Object A");
Singleton objectB = Singleton.GetInstance;
objectA.PrintDetails("This is from Object B");
//Uncomment following code if we want to test why we need to seal our class.
//Singleton.DerivedSingleton derivedObj = new Singleton.DerivedSingleton();
//derivedObj.PrintDetails("From Derived");
break;
case "2":
Parallel.Invoke(
() => SingletonHelper.PrintObjectA1Details(),
() => SingletonHelper.PrintObjectB1Details()
);
break;
case "3":
SingletonEager objectAE = SingletonEager.GetInstance;
objectAE.PrintDetails("This is from eager loading, obeject AE");
SingletonEager objectBE = SingletonEager.GetInstance;
objectAE.PrintDetails("This is from eager loading, obeject BE");
break;
case "D":
break;
}
Console.Read();
}
