Programming - Adapter Structural Design Pattern

Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn't otherwise because of incompatible interfaces.

• Targetand
  • defines the domain-specific interface that Client uses.
• Adapterand
  and and
  • adapts the interface Adaptee to the Target interface.
• Adapteeand
  and and
  • defines an existing interface that needs adapting.
• Clientand
  and and
  • collaborates with objects conforming to the Target interface.

System;

namespace DoFactory.GangOfFour.Adapter.Structural
{

// Mainapp test application

class MainApp
{
static void Main()
{
// Create adapter and place a request
Target target = new Adapter();
target.Request();

// Wait for user
Console.Read();
}
}

// "Target"

class Target
{
public virtual void Request()
{
Console.WriteLine("Called Target Request()");
}
}

// "Adapter"

class Adapter : Target
{
private Adaptee adaptee = new Adaptee();

public override void Request()
{
// Possibly do some other work
// and then call SpecificRequest
adaptee.SpecificRequest();
}
}

// "Adaptee"

class Adaptee
{
public void SpecificRequest()
{
Console.WriteLine("Called SpecificRequest()");
}
}
}

and