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POWCF Service problem using Ninject (Moving from Windsor) (InvalidOperationException)
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  1. POWCF Service problem using Ninject (Moving from Windsor) (InvalidOperationException)
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    copied!<p>Any Ninject experts in the house? :) I've recently been trying to convert my WCF Service Application and Windows Forms Client Application from Castle Windsor dependency injection to Ninject.</p> <p>All has gone fine on the Win Forms side, but I am encountering issues on the WCF side of things. I have learned so far I believe I need to WCF extensions available for Ninject in order to use DI with WCF which I have done and referenced but still experiencing an issue I believe when my service is attempted to be resolved:</p> <p><strong>System.InvalidOperationException: The type 'WcfMemberService', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.</strong></p> <p>The code I have which is what I thought to be correct to access just for instance my WcfMemberService is as follows:</p> <p><strong>ServiceModule.cs:</strong></p> <pre><code>public class ServiceModule : NinjectModule { private IKernel _parentContainer; public ServiceModule(IKernel container) { this._parentContainer = container; } public override void Load() { Bind&lt;IDataContextProvider&gt;().To&lt;DataContextProvider&gt;() .WithConstructorArgument("connectionString", ConfigurationManager.ConnectionStrings["connectionString"].ConnectionString); Bind(typeof(IRepository&lt;&gt;)).To(typeof(Repository&lt;&gt;)); Bind&lt;IServiceLocator&gt;().ToConstant(new NinjectServiceLocator(_parentContainer)); Bind&lt;IUserService&gt;().To&lt;UserService&gt;(); // ** WCF Services ** Bind&lt;Business.Common.Wcf.Services.Contracts.IMemberServiceContract&gt;().To&lt;Business.Common.Wcf.Services.MemberService&gt;().InSingletonScope().Named("WcfMemberService"); } } </code></pre> <p>The assumption I made is when converting over from my working Castle Windsor configuration is that <code>Named()</code> should be the same entry which is featured in the declaration of your WCF <code>.svc</code> file. So I have done that as follows:</p> <pre><code>&lt;%@ ServiceHost Language="C#" Service="WcfMemberService" Factory="Ninject.Extensions.Wcf.NinjectServiceHostFactory" %&gt; </code></pre> <p>Pretty simple, I have taken this approach from the TimeService example solution featured on the Ninject Wcf Extensions GitHub page <a href="http://github.com/ninject/ninject.extensions.wcf/" rel="nofollow">here</a> by the way.</p> <p>Can anyone see what I have done wrong here and why "WcfMemberService" would not be resolving? It is bound to be "WcfMemberService" in the Kernel and referenced in the @ServiceHost declaration. I can't see what else could be wrong. This is exactly the same as how I declare it in Castle Windsor, except for roughly different syntax, but both use <code>Named()</code> and both ref that name in the Service part of the <code>.svc</code> file.</p> <p>*<strong><em>Update</em>*</strong> I have discovered if I do not use the <code>Named()</code> approach, and simply set my service in <code>@ ServiceHost</code> declaration as <code>Business.Common.Wcf.Services.MemberService, Business.Common.Wcf.Services</code> it works. But I am still stumped as to why I can't use Named services. Thanks.</p> <p>By the way, my Ninject module is loaded via <code>Global.asax.cs</code> in this fashion:</p> <pre><code>public class Global : NinjectWcfApplication { #region Overrides of NinjectWcfApplication /// &lt;summary&gt; /// Creates the kernel that will manage your application. /// &lt;/summary&gt; /// &lt;returns&gt;The created kernel.&lt;/returns&gt; protected override IKernel CreateKernel() { // config to reside in executing directory log4net.Config.XmlConfigurator.Configure(new FileInfo("log4net.config")); var _container = new StandardKernel(); _container.Load(new ServiceModule(_container)); //_container.Load(new Log4netModule()); ServiceLocator.SetLocatorProvider(() =&gt; _container.Get&lt;IServiceLocator&gt;()); return _container; } #endregion } </code></pre>
 

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