Inversion of Control

StructureMap Multiple Parameters

Jul 3rd

One of the common questions about IOC is how to pass parameters. This question is specially common with StructureMap since a lot of the old methods have been deprecated.

Here is a quick Example:


public class DataSource : IDataSource
{
        public DataSource(string URL, string account, string password)
        {
                     //your code here
         }

}


ObjectFactory.Initialize(x =>
{
      x.For<IDataSource>().Use<DataSource>()
           .Ctor<string>("URL").Is(URL)
           .Ctor<string>("account").Is(account)
           .Ctor<string>("password").Is(password)
           ;
}

and you can call it like this:


private IDataSource ds = ObjectFactory.GetInstance<IDataSource>();

There is a huge amount of benefits as I mentioned in my previous post, including saving a lot of typing since all parameters are preconfigured.

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Unitiy IOC

Feb 11th

Posted by dan in Best practice

2 comments

Basically, with Unity, I ended up writing something like this (simplified version) :

IUnityContainer container = new UnityContainer();

container.RegisterType<IRiskRepository, RiskRepository>();

string conn = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;

container.Configure<InjectedMembers>().ConfigureInjectionFor<RiskRepository>(new InjectionConstructor(conn));

UnityControllerFactory factory = new UnityControllerFactory(container);

ControllerBuilder.Current.SetControllerFactory(factory);

Unity turned out to work very well. I was able to save a lot of lines of code and it is greatly improving the testability of the dynamic modules I am using on the mock project architecture. Also, it was easy to set up. Its a good alternative to the other more popular IOC.

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