L'ajout d'une extension de comportement wcf personnalisée provoque une exception ConfigurationErrorsException

Je veux ajouter un comportement de l'extension, ainsi que mes classes de service sera instancié avec Ninject. J'ai créé une classe qui hérite de BehaviorExtensionElement et enregistré dans mon Application.config. Je ne vois rien d'évident, je suis absent, mais au démarrage c'est jeté:

System.Configuration.ConfigurationErrorsException: An error occurred creating the configuration section handler for system.serviceModel/behaviors: Extension element TestExtension cannot be added to this element. Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions.
Parameter name: element (...\MyAssembly.dll.config line 42) ---> 
System.ArgumentException: Extension element TestExtension cannot be added to this element. 
Verify that the extension is registered in the extension collection at system.serviceModel/extensions/behaviorExtensions.
Parameter name: element

Ici est l'une de mes applications.config:

<system.serviceModel>
<extensions>
  <behaviorExtensions>
    <add name="TestExtension" type="Mynamespace.DependencyInjectionServiceBehavior,MyAssembly,Version=1.0.0.0,Culture=neutral,PublicKeyToken=null" />
  </behaviorExtensions>
</extensions>
<behaviors>
  <serviceBehaviors>
    <behavior name="MyServiceBehavior">
      <TestExtension/>
    </behavior>
  </serviceBehaviors>
</behaviors>

Voici mon comportement en classe:

public class DependencyInjectionServiceBehavior : BehaviorExtensionElement, IServiceBehavior
{
    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {
        foreach (ChannelDispatcherBase cdb in serviceHostBase.ChannelDispatchers)
        {
            ChannelDispatcher cd = cdb as ChannelDispatcher;
            if (cd != null)
            {
                foreach (EndpointDispatcher ed in cd.Endpoints)
                {
                    ed.DispatchRuntime.InstanceProvider =
                        new DependencyInjectionInstanceProvider(serviceDescription.ServiceType);
                }
            }
        }
    }

    public void Validate(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
    {
    }

    public void AddBindingParameters(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase,
        Collection<ServiceEndpoint> endpoints, BindingParameterCollection bindingParameters)
    {
    }

    public override Type BehaviorType
    {
        get { return this.GetType(); }
    }

    protected override object CreateBehavior()
    {
        return new DependencyInjectionServiceBehavior();
    }

}

source d'informationauteur Blake Pettersson