Autofac多个实现

var builder = new ContainerBuilder();
builder.RegisterType<RepositoryA>().As<IRepository>();
builder.RegisterType<RepositoryB>().As<IRepository>();

using (var scope = container.BeginLifetimeScope())
{
    var repositories = scope.Resolve<IEnumerable<IRepository>>();
    foreach (var repository in repositories)
    {
        // 使用解析到的实例进行操作
    }
}

builder.RegisterType<RepositoryA>()
    .As<IRepository>()
    .WithMetadata("Type", "A");

builder.RegisterType<RepositoryB>()
    .As<IRepository>()
    .WithMetadata("Type", "B");

using (var scope = container.BeginLifetimeScope())
{
    var repositories = scope.Resolve<IEnumerable<Meta<IRepository>>>();

    foreach (var repository in repositories)
    {
        var type = repository.Metadata["Type"];
        if (type == "A")
        {
            // 使用RepositoryA进行操作
        }
        else if (type == "B")
        {
            // 使用RepositoryB进行操作
        }
    }
}