StructureMap Exception Code: 202 No Default Instance defined for PluginFamily

entity-framework-4structuremap

I am Using Entity Framework 4.0 calling the below mentioned code from asp.net. I have a address table in which I need to insert some data. my code is :

        IRepository<Address> addressRepository;
        int addressHOCODE = 0;

        try
        {
            **addressRepository = ObjectFactory.GetInstance<IRepository<Address>>();**

            addressRepository.Add(address);
            addressRepository.SaveChanges();
            addressHOCODE = address.HOCODE;
        }
        catch ...

At the addressRepository = ObjectFactory.GetInstance<IRepository<Address>>(); line, we're getting the following error.

StructureMap Exception Code: 202 No
Default Instance defined for
PluginFamily
Domain.IRepository`1[[Data.Address,
DataAccessLayerNew, Version=1.0.0.0,
Culture=neutral,
PublicKeyToken=null]],
DataAccessLayerNew, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=null

Best Answer

Looks like you worked this out for yourself, but to help others who might come across this page, I'd expect to see something like this in the Global.asax.cs file:

using System;

namespace Host
{
    public class Global : System.Web.HttpApplication
    {
        protected void Application_Start (object sender, EventArgs e) {
            ObjectFactory.Configure(config => 
            {
                config.For<IRepository>().Use<ConcreteRepository>();
            });
        }
    }
}

Related Solutions

C# – StructureMap Error 202 Setting up IOC container

The controller you are trying to instantiate has a constructor dependency on IService. You have to make sure that you register a concrete implementation of IService when you configure StructureMap. The DefaultConventionScanner will only register implementations that have the same name as their interface (without the leading I). So, unless your implementation of IService is named Service, it will not be registered automatically. To register it explicitly, add something like this to your inititalization script:

x.For<IService>().Use<MyService>();

Alternatively, if you are running StructureMap from the latest source code, you can make use of the SingleImplementationScanner in your Scan() expression:

y.With(new SingleImplementationScanner());

and that will automatically register concrete types if they are the only implementation of an interface in the scanned code, regardless of name.

StructureMap exception: No Default Instance defined for PluginFamily

Unfortunately I have little familiarity with configuring StructureMap via Xml. Let me show you how it is done using C#.

var container = new Container(config=>
{
  config.For<ISysMsgRepository>().Use<SysMsgRepository>();
});

It seems you are using the standard naming convention for your interfaces and classes (just tacking an I onto the front of the class name). If you do that for all your types you can just configure your container like this:

var container = new Container(config=>
{
    config.Scan(scan =>
    {
        scan.TheCallingAssembly();
        scan.WithDefaultConventions();
    });
});

I hope this helps. It is much easier to configure your container using code rather than Xml. Give it a try. You'll be a convert.

Best Answer

Related Solutions

C# – StructureMap Error 202 Setting up IOC container

StructureMap exception: No Default Instance defined for PluginFamily

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