public ICreditCard CreateObject(int CreditCardType)
{
ICreditCard product = null;
if (CreditCardType == 1)
{
product = new PlatinumCreditCardFactory().CreateProduct();
}
else if (CreditCardType == 2)
{
product = new TitaniumCreditCardFactory().CreateProduct();
}
return(product);
}
static void Main(string[] args)
{
Console.WriteLine("--------------Singleton--------------");
//Singleton
Parallel.Invoke(
() => PrintStudentDetails(),
() => PrintEmployeeDetails()
);
Console.WriteLine("--------------");
//Simple Factory Design Pattern
Console.WriteLine("--------------Simple Factory Design Pattern--------------");
int cardType = 1;
ICreditCard cardDetails = CardFactory.GetCardInstance(cardType);;
if (cardDetails != null)
{
Console.WriteLine("CardType : " + cardDetails.GetCardType());
Console.WriteLine("CreditLimit : " + cardDetails.GetCreditLimit());
Console.WriteLine("AnnualCharge :" + cardDetails.GetAnnualCharge());
}
else
{
Console.Write("Invalid Card Type");
}
Console.WriteLine("--------------");
//Simple Factory Method Design Pattern
Console.WriteLine("--------------Simple Factory Method Design Pattern--------------");
SFMDP.ICreditCard CreditCardInstance = new SFMDP.PlatinumCreditCardFactory().CreateProduct();
if (CreditCardInstance != null)
{
Console.WriteLine("CardType : " + CreditCardInstance.GetCardType());
Console.WriteLine("CreditLimit : " + CreditCardInstance.GetCreditLimit());
Console.WriteLine("AnnualCharge :" + CreditCardInstance.GetAnnualCharge());
}
else
{
Console.Write("Invalid Card Type");
}
CreditCardInstance = new SFMDP.TitaniumCreditCardFactory().CreateProduct();
if (CreditCardInstance != null)
{
Console.WriteLine("CardType : " + CreditCardInstance.GetCardType());
Console.WriteLine("CreditLimit : " + CreditCardInstance.GetCreditLimit());
Console.WriteLine("AnnualCharge :" + CreditCardInstance.GetAnnualCharge());
}
else
{
Console.Write("Invalid Card Type");
}
Console.WriteLine("--------------Providing another layer of Abstraction--------------");
//Providing another layer of Abstraction:
// In the above example, we directly call the CreateProduct method on a particular factory class instance to get the actual product instance.What if I need to create the product instance based on the card type value that I received from the user.If this is your requirement, then you need to create another simple factory class as shown below.Create a class with the name CreditCardFactory and then copy and paste the following code.
//Setting the Card Type value
int CreditCardType = 1;
//This is going to return an instance of a Particular Card type object
CreditCardInstance = new SFMDP.CreditCardFactory().CreateObject(CreditCardType);
if (CreditCardInstance != null)
{
Console.WriteLine("CardType : " + CreditCardInstance.GetCardType());
Console.WriteLine("CreditLimit : " + CreditCardInstance.GetCreditLimit());
Console.WriteLine("AnnualCharge :" + CreditCardInstance.GetAnnualCharge());
}
else
{
Console.Write("Invalid Card Type");
}
Console.WriteLine("--------------");
Console.WriteLine("------Abolish Switch Case--------");
SwitchCase switchCase = new SwitchCase();
switchCase.Type = "Type0";
Console.WriteLine($"Type :: {switchCase.Type} Value :: {switchCase.GetNewValueBasedOnType(1)}");
switchCase.Type = "Type1";
Console.WriteLine($"Type :: {switchCase.Type} Value :: {switchCase.GetNewValueBasedOnType(1)}");
switchCase.Type = "Type2";
Console.WriteLine($"Type :: {switchCase.Type} Value :: {switchCase.GetNewValueBasedOnType(1)}");
var entityFactory = new EntityFactory();
var entity = entityFactory.GetEntityBasedOnType(EntityType.Type0);
var result = entity.GetNewValue(1);
Console.WriteLine(result);
entity = entityFactory.GetEntityBasedOnType(EntityType.Type1);
result = entity.GetNewValue(1);
Console.WriteLine(result);
entity = entityFactory.GetEntityBasedOnType(EntityType.Type2);
result = entity.GetNewValue(1);
Console.WriteLine(result);
Console.WriteLine("--------------");
Console.ReadLine();
}