如何提供类的特定实例,以作为WCF服务公开

有没有办法将现有的类实例传递给WCF服务主机,以作为服务端点公开?

我知道(或能想出)如何创建WCF服务的单例实例,但这仍然帮不了我。据我所知,单例实例仍将由WCF创建和提供。

我也想过其他的方法,但如果可以的话,我宁愿选择这个方法。

一些密码。这在我的插件的构造函数中:

// Setup the service host
var baseAddress = new Uri("http://localhost:8080/MyService/");
this.serviceHost = new ServiceHost(this.GetType(), baseAddress);

// Add our service endpoint
// Todo: Is there somewhere around here that I can provide an instance?
//   Maybe in behavior somewhere?
this.serviceHost.AddServiceEndpoint(
    typeof(ITheInterfaceMyClassDerivesFrom),
    new BasicHttpBinding(),
    ""
    );

// Add metadata exchange (so we see something when we go to that URL)
var serviceMetadataBehavior = this.serviceHost.Description.Behaviors
    .Find<ServiceMetadataBehavior>();
if (serviceMetadataBehavior == null)
    this.serviceHost.Description.Behaviors.Add(new ServiceMetadataBehavior());

this.serviceHost.AddServiceEndpoint(
    typeof(IMetadataExchange),
    new CustomBinding(new HttpTransportBindingElement()),
    "MEX"
    );

serviceHost.Open();