static void Main(string[] args)
{
//Singleton
/*
SingletonExample singletonExample = SingletonExample.GetInstance();
*/
//--------------------------------------------------------------------------------
//FactoryPattern
/*
CardFactory cardFactory = null;
Console.Write("Enter the card type you would like to visit: ");
string card = Console.ReadLine();
switch (card.ToLower())
{
case "moneyback":
cardFactory = new MoneyBackFactory(50000, 0);
break;
case "titanium":
cardFactory = new TitaniumFactory(100000, 500);
break;
case "platinum":
cardFactory = new PlatinumFactory(500000, 1000);
break;
default:
break;
}
CreditCard creditCard = cardFactory.GetCreditCard();
Console.WriteLine("\nYour card details are below : \n");
Console.WriteLine("Card Type: {0}\nCredit Limit: {1}\nAnnual Charge: {2}",
creditCard.CardType, creditCard.CreditLimit, creditCard.AnnualCharge);
Console.ReadKey();
*/
//--------------------------------------------------------------------------------
//Facade Pattern
/*
// Creating the Order/Product details
OrderDetails orderDetails = new OrderDetails("C# Design Pattern Book",
"Simplified book on design patterns in C#",
500,
10,
"Street No 1",
"Educational Area",
1212,
"4156213754"
);
// Using Facade
OnlineShoppingFacade facade = new OnlineShoppingFacade();
facade.FinalizeOrder(orderDetails);
Console.ReadLine();
*/
//----------------------------------------------------------------------------------
//Adapter Pattern
/*
ITarget target = new EmployeeAdapter();
ThirdPartyBillingSystem client = new ThirdPartyBillingSystem(target);
client.ShowEmployeeList();
Console.ReadLine();
*/
//----------------------------------------------------------------------------------
//Composite Pattern
/*
Employee Rahul = new Employee { EmpID = 1, Name = "Rahul" };
Employee Amit = new Employee { EmpID = 2, Name = "Amit" };
Employee Mohan = new Employee { EmpID = 3, Name = "Mohan" };
Rahul.AddSubordinate(Amit);
Rahul.AddSubordinate(Mohan);
Employee Rita = new Employee { EmpID = 4, Name = "Rita" };
Employee Hari = new Employee { EmpID = 5, Name = "Hari" };
Amit.AddSubordinate(Rita);
Amit.AddSubordinate(Hari);
Employee Kamal = new Employee { EmpID = 6, Name = "Kamal" };
Employee Raj = new Employee { EmpID = 7, Name = "Raj" };
Contractor Sam = new Contractor { EmpID = 8, Name = "Sam" };
Contractor tim = new Contractor { EmpID = 9, Name = "Tim" };
Mohan.AddSubordinate(Kamal);
Mohan.AddSubordinate(Raj);
Mohan.AddSubordinate(Sam);
Mohan.AddSubordinate(tim);
Console.WriteLine("EmpID={0}, Name={1}", Rahul.EmpID, Rahul.Name);
foreach (Employee manager in Rahul)
{
Console.WriteLine("\n EmpID={0}, Name={1}", manager.EmpID, manager.Name);
foreach (var employee in manager)
{
Console.WriteLine(" \t EmpID={0}, Name={1}", employee.EmpID, employee.Name);
}
}
Console.ReadKey();
*/
//----------------------------------------------------------------------------------
//Proxy Pattern
/*
var imgProxy = new ImageProxy();
var image = imgProxy.GetImage();
Console.ReadKey();
*/
//----------------------------------------------------------------------------------
//Decorator Pattern
/*
// Basic vehicle
HondaCity car = new HondaCity();
Console.WriteLine("Honda City base price are : {0}", car.Price);
// Special offer
SpecialOffer offer = new SpecialOffer(car);
offer.DiscountPercentage = 25;
offer.Offer = "25 % discount";
Console.WriteLine("{1} @ Diwali Special Offer and price are : {0} ", offer.Price, offer.Offer);
Console.ReadKey();
*/
//----------------------------------------------------------------------------------
//Chain of responsibilty
/*
TeamLeader tl = new TeamLeader();
ProjectLeader pl = new ProjectLeader();
HR hr = new HR();
// Now lets set the hierarchy of employees
tl.Supervisor = pl;
pl.Supervisor = hr;
// Now lets apply 5 day leave my TL
tl.ApplyLeave(new Leave(Guid.NewGuid(), 5));
// Now lets apply 15 day leave my TL
tl.ApplyLeave(new Leave(Guid.NewGuid(), 15));
// Now lets apply 25 day leave my TL
tl.ApplyLeave(new Leave(Guid.NewGuid(), 25));
// Now lets apply 35 day leave my TL
tl.ApplyLeave(new Leave(Guid.NewGuid(), 35));
Console.ReadLine();
*/
//----------------------------------------------------------------------------------
//Command Pattern
/*
Console.WriteLine("Enter Commands (ON/OFF) : ");
string cmd = Console.ReadLine();
Light lamp = new Light();
ICommand switchUp = new FlipUpCommand(lamp);
ICommand switchDown = new FlipDownCommand(lamp);
Switch s = new Switch();
if (cmd == "ON")
{
s.StoreAndExecute(switchUp);
}
else if (cmd == "OFF")
{
s.StoreAndExecute(switchDown);
}
else
{
Console.WriteLine("Command \"ON\" or \"OFF\" is required.");
}
Console.ReadKey();
*/
//----------------------------------------------------------------------------------
//Mediator Pattern
/*
// Create chatroom
Chatroom chatroom = new Chatroom();
// Create participants and register them
Participant George = new Beatle("George");
Participant Paul = new Beatle("Paul");
Participant Ringo = new Beatle("Ringo");
Participant John = new Beatle("John");
Participant Yoko = new NonBeatle("Yoko");
chatroom.Register(George);
chatroom.Register(Paul);
chatroom.Register(Ringo);
chatroom.Register(John);
chatroom.Register(Yoko);
// Chatting participants
Yoko.Send("John", "Hi John!");
Paul.Send("Ringo", "All you need is love");
Ringo.Send("George", "My sweet Lord");
Paul.Send("John", "Can't buy me love");
John.Send("Yoko", "My sweet love");
// Wait for user
Console.ReadKey();
*/
//----------------------------------------------------------------------------------
//Observer Pattern
DummyProduct product = new DummyProduct();
// We have four shops wanting to keep updated price set by product owner
Shop shop1 = new Shop("Shop 1");
Shop shop2 = new Shop("Shop 2");
Shop shop3 = new Shop("Shop 3");
Shop shop4 = new Shop("Shop 4");
//Lets use WAY_1 for first two shops
product.Attach(shop1);
product.Attach(shop2);
//Lets use WAY_2 for other two shops
product.Attach2(shop3);
product.Attach2(shop4);
//Now lets try changing the products price, this should update the shops automatically
product.ChangePrice(23.0f);
//Now shop2 and shop 4 are not interested in new prices so they unsubscribe
product.Detach(shop2);
product.Detach2(shop4);
//Now lets try changing the products price again
product.ChangePrice(26.0f);
Console.Read();
}
