Adapter Design Pattern

This short article shows you have to build the Adapter Pattern using C#.

After gone through all the samples, The one in from and I feel is easier to understand.

The UML diagram as below.


As first the Target is created.

class Target


    public virtual void Request()


        Console.WriteLine(“Called Target Request()”);



Then create the Adapter class inherit from the Target class.

class Adapter : Target


    private Adaptee _adaptee = new Adaptee();


    public override void Request()


        // Possibly do some other work

        //  and then call SpecificRequest




The last class is the Adaptee referenced by Adapter.

class Adaptee


    public void SpecificRequest()


        Console.WriteLine(“Called SpecificRequest()”);



The main program will look like below.

static void Main()


    // Create adapter and place a request

    Target target = new Adapter();



    // Wait for user



Some people will start Target as Interface but that is really not a need here.

You can also download a single solution from The sample file name is My MSN ID is


About chanmingman

Since March 2011 Microsoft Live Spaces migrated to Wordpress ( till now, I have is over 1 million viewers. This blog is about more than 50% telling you how to resolve error messages, especial for Microsoft products. The blog also has a lot of guidance teaching you how to get stated certain Microsoft technologies. The blog also uses as a help to keep my memory. The blog is never meant to give people consulting services or silver bullet solutions. It is a contribution to the community. Thanks for your support over the years. Ming Man is Microsoft MVP since year 2006. He is a software development manager for a multinational company. With 25 years of experience in the IT field, he has developed system using Clipper, COBOL, VB5, VB6, VB.NET, Java and C #. He has been using Visual Studio (.NET) since the Beta back in year 2000. He and the team have developed many projects using .NET platform such as SCM, and HR based applications. He is familiar with the N-Tier design of business application and is also an expert with database experience in MS SQL, Oracle and AS 400.
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