WithMetadataAttribute Class

[ObsoleteAttribute("Use the Autofac.Features.AttributeFilters.MetadataFilterAttribute from the core Autofac library instead.")]
public sealed class WithMetadataAttribute : ParameterFilterAttribute

<ObsoleteAttribute("Use the Autofac.Features.AttributeFilters.MetadataFilterAttribute from the core Autofac library instead.")>
Public NotInheritable Class WithMetadataAttribute
	Inherits ParameterFilterAttribute

public class Manager
{
  public Manager([WithMetadata("LoggerName", "Manager")] ILogger logger)
  {
    // ...
  }
}

public class SolutionExplorer
{
  public SolutionExplorer(
    [WithMetadata("Target", "Solution")] IEnumerable<IAdapter> adapters,
    [WithMetadata("LoggerName", "Solution")] ILogger logger)
  {
    this.Adapters = adapters.ToList();
    this.Logger = logger;
  }
}

var builder = new ContainerBuilder();
builder.RegisterModule(new AttributedMetadataModule());

// Attach metadata to the components getting filtered
builder.RegisterType<ConsoleLogger>().WithMetadata("LoggerName", "Solution").As<ILogger>();
builder.RegisterType<FileLogger>().WithMetadata("LoggerName", "Other").As<ILogger>();

// Attach the filtering behavior to the component with the constructor
builder.RegisterType<SolutionExplorer>().WithAttributeFilter();

var container = builder.Build();

// The resolved instance will have the appropriate services in place
var explorer = container.Resolve<SolutionExplorer>();