在 C# Autofac 中，如何从具有多个具体类的单个接口解析类

Question

我有一个包含多个类实现的接口。我已经在 Autofac Container 中注册了它们。我的问题是如何解决特定课程的问题？

界面

public interface IAccountDataStorage
{
    Account GetAccount(string accountNumber);
    void UpdateAccount(Account account);
}

实现的类

public class BackupAccountDataStore : IAccountDataStorage
{
     ...
}

public class AccountDataStore : IAccountDataStorage
{
     ...
}

在容器中注册

这行不通！

builder.RegisterType<AccountDataStore>().As<IAccountDataStorage>().InstancePerRequest();
builder.RegisterType<BackupAccountDataStore>().As<IAccountDataStorage>().InstancePerRequest();

现在我想解析到一个特定的类

// this does not work for me as it will pick itself one of the 
// above class.. need help here
var paymentService = buildContainer.Resolve<IPaymentService>(); 

Answer 1

我找到了答案；

 builder.RegisterType<AccountDataStore>().Keyed("defaultAccountStorage", typeof(IAccountDataStorage));
 builder.RegisterType<BackupAccountDataStore>().Keyed("backupAccountStorage", typeof(IAccountDataStorage));


var a = buildContainer.ResolveKeyed<IAccountDataStorage>("defaultAccountStorage");
var b = buildContainer.ResolveKeyed<IAccountDataStorage>("backupAccountStorage");