StructureMap: Using the IoC container inside the Registry

StructureMap has an easy to use Registry DSL that can be used in a Registry class. By using (one or more) Registry classes you can group all your IoC plumbing together.

	public class FooBarRegistry : Registry
	{
	public FooBarRegistry()
	{
	For<IFoo>().Use<Foo>();
	For<IBar>().Use<Bar>();
	}
	}

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Yesterday I had a situation where I wanted to use some object that was already registered in the IoC container in the registration of another class. This is possible by passing an IContext as a second parameter of the Use() method in the fluent API:

	public class InfrastructureRegistry : Registry
	{
	public InfrastructureRegistry()
	{
	ForSingletonOf<IDocumentStore>().Use("Build the DocumentStore", (IContext context) =>
	{
	var options = context.GetInstance<ApplicationOptions>();
	var connectionString = options.Data.ConnectionString;
	return DocumentStore.For(_ =>
	{
	_.Connection(connectionString);
	});
	}
	}
	}

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