does not contain a definition for ‘UpdateCommand’ and no extension method ‘UpdateCommand’ accepting a first argument of type

This article basically telling you do not use VS 2012 without Update 4.

I declared an Interface as below.

public interface ICommanIneterface<T>


    MySqlDataAdapter Insert(T source, MySqlConnection connetion);


I am an implementation of the Interface.

public class UserCommand : ICommanIneterface<user>


      public MySqlDataAdapter Insert(user User1, MySqlConnection connection)


I then create a Template class.

public class CommonCommand<T>


        public void InserCommand(T t, ICommanIneterface<T> func)


I consumed the Template class with the follow code.

CommonCommand<user> commonCommand = new CommonCommand<user>();

user t = new user();


t = PopulateObject(); consume the

commonCommand.UpdateComman(t, userCommand);

For god sake, I have gotten an

Error     1          ‘SunMoonCS.Data_Access.CommonCommand<SunMoonCS.Maintenance.user>’ does not contain a definition for ‘UpdateCommand’ and no extension method ‘UpdateCommand’ accepting a first argument of type ‘SunMoonCS.Data_Access.CommonCommand<SunMoonCS.Maintenance.user>’ could be found (are you missing a using directive or an assembly reference?)

What I did was I temporary removed the second parameter.

        public void InserCommand(T t,)

Retype the following

CommonCommand<int> commonCommand = new CommonCommand<int>();



By doing that I managed to compile. After that I changed back all the code to what it was before and build again without error.

This is Visual Studio 2012 bug. I installed Update 4 and the problem seems no longer there.

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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