static void Main(string[] args)
{
#region Creational Patterns
#region Singleton Pattern
//Singleton singleton = Singleton.Instance;
Console.WriteLine("------Singleton Pattern------");
LoadBalancer b1 = LoadBalancer.GetLoadBalancer();
LoadBalancer b2 = LoadBalancer.GetLoadBalancer();
LoadBalancer b3 = LoadBalancer.GetLoadBalancer();
LoadBalancer b4 = LoadBalancer.GetLoadBalancer();
// Same instance?
if (b1 == b2 && b2 == b3 && b3 == b4)
{
Console.WriteLine("Same instance\n");
}
// Load balance 15 server requests
LoadBalancer balancer = LoadBalancer.GetLoadBalancer();
for (int i = 0; i < 15; i++)
{
string server = balancer.Server;
Console.WriteLine("Dispatch Request to: " + server);
}
// Wait for user
Console.ReadKey();
#endregion
#region Factory Method Pattern
//Console.WriteLine("------Factory Method Pattern------");
//ICreditCard creditCard = new PlatinumFactory().CreateProduct();
//if (creditCard != null)
//{
// Console.WriteLine("Card Type : " + creditCard.GetCardType());
// Console.WriteLine("Credit Limit : " + creditCard.GetCreditLimit());
// Console.WriteLine("Annual Charge :" + creditCard.GetAnnualCharge());
//}
//else
//{
// Console.Write("Invalid Card Type");
//}
//Console.WriteLine("--------------");
//creditCard = new MoneyBackFactory().CreateProduct();
//if (creditCard != null)
//{
// Console.WriteLine("Card Type : " + creditCard.GetCardType());
// Console.WriteLine("Credit Limit : " + creditCard.GetCreditLimit());
// Console.WriteLine("Annual Charge :" + creditCard.GetAnnualCharge());
//}
//else
//{
// Console.Write("Invalid Card Type");
//}
//Console.ReadLine();
#endregion
#region Abstract Factory Pattern
//Console.WriteLine("------Abstract Factory Pattern------");
//IAnimal animal = null;
//AnimalFactory animalFactory = null;
//string speakSound = string.Empty;
//// Create the Sea Factory object by passing the factory type as Sea
//animalFactory = AnimalFactory.CreateAnimalFactory("Sea");
//Console.WriteLine("Animal Factory type : " + animalFactory.GetType().Name);
//Console.WriteLine();
//// Get Octopus Animal object by passing the animal type as Octopus
//animal = animalFactory.GetAnimal("Octopus");
//Console.WriteLine("Animal Type : " + animal.GetType().Name);
//speakSound = animal.Speak();
//Console.WriteLine(animal.GetType().Name + " Speak : " + speakSound);
//Console.WriteLine();
//Console.WriteLine("--------------------------");
//// Create Land Factory object by passing the factory type as Land
//animalFactory = AnimalFactory.CreateAnimalFactory("Land");
//Console.WriteLine("Animal Factory type : " + animalFactory.GetType().Name);
//Console.WriteLine();
//// Get Lion Animal object by passing the animal type as Lion
//animal = animalFactory.GetAnimal("Lion");
//Console.WriteLine("Animal Type : " + animal.GetType().Name);
//speakSound = animal.Speak();
//Console.WriteLine(animal.GetType().Name + " Speak : " + speakSound);
//Console.WriteLine();
//// Get Cat Animal object by passing the animal type as Cat
//animal = animalFactory.GetAnimal("Cat");
//Console.WriteLine("Animal Type : " + animal.GetType().Name);
//speakSound = animal.Speak();
//Console.WriteLine(animal.GetType().Name + " Speak : " + speakSound);
//Console.Read();
#endregion
#endregion
#region Structural Patterns
#region Adapter Pattern
//Console.WriteLine("------Adapter Pattern------");
//Console.WriteLine("------Example (1) ------");
//Person p = new Person();
//p.SwitchOn(new HP_Laptop()); //On HP Laptop
//p.SwitchOn(new Compaq_Laptop()); //On Compaq laptop
//Console.WriteLine("------Example (2) ------");
//ITarget adapter = new VendorAdapter();
//foreach (string product in adapter.GetProducts())
//{
// Console.WriteLine(product);
//}
//Console.ReadLine();
#endregion
#endregion
#region Behavioral Patterns
#region Strategy Pattern
//Console.WriteLine("------Strategy Pattern------");
//List<Employee> employees = new List<Employee>();
//employees.Add(new Employee()
//{
// Name = "Mohammad Helal",
// Type = EmployeeType.PartTime
//});
//employees.Add(new Employee()
//{
// Name = "Mohammad Adnan",
// Type = EmployeeType.FullTime
//});
//var manager = new SalaryManager();
//foreach (var item in employees)
//{
// Console.WriteLine($"Name: {item.Name} - Salary: {manager.CalculateSalary(item)}");
//}
//Console.ReadLine();
#endregion
#region State Pattern
//Console.WriteLine("------State Pattern------");
//CDPlayer cdPlayer = new CDPlayer();
////Change CD Player state from 'Closed' to 'Opened'
//cdPlayer.Press();
////Change CD Player state from 'Opened' to 'Playing'
//cdPlayer.Press();
////Change CD Player state from 'Playing' to 'Closed'
//cdPlayer.Press();
//Console.ReadLine();
#endregion
#endregion
}