StructureMap exception: No Default Instance defined for PluginFamily - structuremap

Question

I have a SysMsgManager class defined in CoreService project as following:
public class SysMsgManager
{
private ISysMsgRepository _SysMsgRepository;
public SysMsgManager()
{
_SysMsgRepository = ObjectFactory.GetInstance<ISysMsgRepository>();
}
....
}
In my DataAccess project I have 'ISysMsgRepository' interface and two concrete implementations defined as following:
namespace DataAccess.Repository
{
[Pluggable("Default")]
public class SysMsgRepository : ISysMsgRepository
{
...
}
}
namespace DataAccess.Repository
{
[Pluggable("Stub")]
public class SysMsgRepository_Test : ISysMsgRepository
{
...
}
}
and this is what I have in my StructureMap.config file
<StructureMap>
<Assembly Name="CoreService" />
<Assembly Name="DataAccess" />
<PluginFamily
Assembly="DataAccess"
Type="DataAccess.Repository.ISysMsgRepository"
DefaultKey="Default" />
</StructureMap>
When I try to run my app, I got the following error:
StructureMap Exception Code: 202\nNo Default Instance defined for PluginFamily DataAccess.Repository.ISysMsgRepository, DataAccess, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
Can anyone help me to solve this problem? Thanks!

Answer 1

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.