Resolve dependency with autofac based on constructor parameter attribute
- by Andrew Davey
I'm using AutoFac. I want to inject a different implementation of a dependency based on an attribute I apply to the constructor parameter. For example:
class CustomerRepository
{
public CustomerRepository([CustomerDB] IObjectContainer db) { ... }
}
class FooRepository
{
public FooRepository([FooDB] IObjectContainer db) { ... }
}
builder.Register(c => /* return different instance based on attribute on the parameter */)
.As<IObjectContainer>();
The attributes will be providing data, such as a connection string, which I can use to instance the correct object.
How can I do this?
