您可以實現IInstanceProvider(見http://msdn.microsoft.com/en-us/library/system.servicemodel.dispatcher.iinstanceprovider.aspx),並告訴WCF運行時通過服務行爲來使用它。
服務行爲可以用自定義主機,配置或與屬性進行配置。這裏,後者的一個例子:
public class DependencyInjectionServiceBehaviorAttribute : Attribute, IServiceBehavior
{
public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
foreach (var cdb in serviceHostBase.ChannelDispatchers)
{
var cd = cdb as ChannelDispatcher;
if (cd != null)
{
foreach (EndpointDispatcher ed in cd.Endpoints)
{
ed.DispatchRuntime.InstanceProvider = new MyServiceFactory(serviceDescription.ServiceType);
}
}
}
}
public void AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase,
Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters) {}
public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase) {}
}