如何将参数传递给ServiceHost

Question

我正在做以下工作

 //Define the service host
        this._smeediPluginServiceHost = new ServiceHost(typeof(SmeediServiceHost), smeediServiceUri);
        this._smeediPluginServiceHost.AddServiceEndpoint(typeof(ISmeediServiceHost), GetBinding(), smeediServiceUri);
        SetupAndStartWebService(_smeediPluginServiceHost); 


  private void SetupAndStartWebService(ServiceHost serviceHost, ServiceDiscoveryBehavior serviceDiscoveryBehavior = null)
    {
        //Define service behaviours
        ServiceMetadataBehavior serviceMetadataBehavior = new ServiceMetadataBehavior();
        serviceMetadataBehavior.HttpGetEnabled = true;

        //Add the behaviours to the service
        serviceHost.Description.Behaviors.Add(serviceMetadataBehavior);

        if (serviceDiscoveryBehavior != null)
            serviceHost.Description.Behaviors.Add(serviceDiscoveryBehavior);

        serviceHost.Open();
    }  

我需要向Service传递一个参数，但我不知道如何传递。我看过How do I pass values to the constructor on my wcf service?，但还是想不通。谢谢

Answer 1

如果我理解正确的话，您希望将参数传递给服务实现类的构造函数。你可以通过passing an of the service class to the ServiceHost constructor来实现，而不是它的类型。这就是：

// Create the service instance
var instance = new SmeediServiceHost("some parameters");

// Define the service host using the above instance
this._smeediPluginServiceHost = new ServiceHost(instance, smeediServiceUri);

Caution -使用此方法意味着您正在使用服务类的单个实例。如果每个会话或每个请求都需要一个新实例，那么可以考虑使用this answer中描述的ServiceHostFactory。